* [PATCH 01/25] mtd: spi-nor: winbond: W25Q32xW-Q/N: Enhance identification of the chips
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 02/25] mtd: spi-nor: winbond: W25Q64xW-Q/N: " Miquel Raynal
` (20 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
The EF 60 16 ID has been reused for:
- DW-P/G (no SFDP support, but CMP and quad capable)
- FW-G/Q (SFDP, CMP and quad capable)
- JW-Q/N (SFDP, CMP and quad capable)
Add a comment to flag these chips.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/spi-nor/winbond.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index f6321c1dc7dc..55c55e41ec92 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -322,6 +322,7 @@ static const struct flash_info winbond_nor_parts[] = {
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
+ /* W25Q32DW-P/G, W25Q32FW-G/Q, W25Q32JW-Q/N */
.id = SNOR_ID(0xef, 0x60, 0x16),
.name = "w25q32dw",
.size = SZ_4M,
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 02/25] mtd: spi-nor: winbond: W25Q64xW-Q/N: Enhance identification of the chips
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
2026-09-09 15:25 ` [PATCH 01/25] mtd: spi-nor: winbond: W25Q32xW-Q/N: Enhance identification of the chips Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 04/25] mtd: spi-nor: winbond: W25Q64xW-Q/N: Fill locking information Miquel Raynal
` (19 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
The EF 60 17 ID has been reused for:
- DW-P/G (no SFDP support, but CMP and quad capable)
- FW-G/Q (SFDP, CMP and quad capable)
- JW-Q/N (SFDP, CMP and quad capable)
Add a comment to flag these chips.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/spi-nor/winbond.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 55c55e41ec92..5ce29987a13c 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -330,6 +330,7 @@ static const struct flash_info winbond_nor_parts[] = {
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
}, {
+ /* W25Q64DW-P/G, W25Q64FW-G/Q, W25Q64JW-Q/N */
.id = SNOR_ID(0xef, 0x60, 0x17),
.name = "w25q64dw",
.size = SZ_8M,
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 04/25] mtd: spi-nor: winbond: W25Q64xW-Q/N: Fill locking information
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
2026-09-09 15:25 ` [PATCH 01/25] mtd: spi-nor: winbond: W25Q32xW-Q/N: Enhance identification of the chips Miquel Raynal
2026-09-09 15:25 ` [PATCH 02/25] mtd: spi-nor: winbond: W25Q64xW-Q/N: " Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 05/25] mtd: spi-nor: winbond: W25Q128JW-Q/N: " Miquel Raynal
` (18 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
The SFDP table does not advertize the locking capabilities of the
device, flag the missing capabilities.
This feature is identical across the various datasheets exposing the
same ID, however I could only test it on the JW-Q variant.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x800000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
5571f5b1deca4414397a96746a87a77ddbe37381cdfc8b104638763d72fa04f1 spi_read
5571f5b1deca4414397a96746a87a77ddbe37381cdfc8b104638763d72fa04f1 spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | unlocked | 64
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x800000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
5571f5b1deca4414397a96746a87a77ddbe37381cdfc8b104638763d72fa04f1 spi_read
5571f5b1deca4414397a96746a87a77ddbe37381cdfc8b104638763d72fa04f1 spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
5571f5b1deca4414397a96746a87a77ddbe37381cdfc8b104638763d72fa04f1 spi_read
5571f5b1deca4414397a96746a87a77ddbe37381cdfc8b104638763d72fa04f1 spi_read2
5571f5b1deca4414397a96746a87a77ddbe37381cdfc8b104638763d72fa04f1 spi_test
896f1008afff470b95ada9696d79308125a86a6e72fe6f0106b1df93a874aca4 spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | locked | 64
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=8388608
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=64
+ ss=131072
+ bps=2
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 8126464 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007bffff | unlocked | 62
007c0000-007fffff | locked | 2
+ flash_lock -u /dev/mtd0 8126464 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007dffff | unlocked | 63
007e0000-007fffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | locked | 2
00040000-007fffff | unlocked | 62
+ flash_lock -u /dev/mtd0 131072 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | locked | 1
00020000-007fffff | unlocked | 63
+ all_but_one=126
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 131072 126
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | unlocked | 1
00020000-007fffff | locked | 63
+ flash_lock -u /dev/mtd0 131072 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | unlocked | 2
00040000-007fffff | locked | 62
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 126
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007dffff | locked | 63
007e0000-007fffff | unlocked | 1
+ flash_lock -u /dev/mtd0 8126464 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007bffff | locked | 62
007c0000-007fffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index fe541c6fd939..7097948e7dba 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -334,7 +334,7 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x60, 0x17),
.name = "w25q64dw",
.size = SZ_8M,
- .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
+ .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* W25Q128FW-G/Q, W25Q128JW-Q/N */
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 05/25] mtd: spi-nor: winbond: W25Q128JW-Q/N: Fill locking information
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (2 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 04/25] mtd: spi-nor: winbond: W25Q64xW-Q/N: Fill locking information Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 07/25] mtd: spi-nor: winbond: W25Q64JW-M: " Miquel Raynal
` (17 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
The SFDP table does not advertize the locking capabilities of the
device, flag the missing capabilities.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x1000000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
0c4503d92f7abc786a21bfb42f8500309b82c1f80080991ed06ab360924ff15e spi_read
0c4503d92f7abc786a21bfb42f8500309b82c1f80080991ed06ab360924ff15e spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | unlocked | 64
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x1000000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
0c4503d92f7abc786a21bfb42f8500309b82c1f80080991ed06ab360924ff15e spi_read
0c4503d92f7abc786a21bfb42f8500309b82c1f80080991ed06ab360924ff15e spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
0c4503d92f7abc786a21bfb42f8500309b82c1f80080991ed06ab360924ff15e spi_read
0c4503d92f7abc786a21bfb42f8500309b82c1f80080991ed06ab360924ff15e spi_read2
0c4503d92f7abc786a21bfb42f8500309b82c1f80080991ed06ab360924ff15e spi_test
c6faba05df93beb9ea5cc41b035d58a7761ae79ee8ac09b5ca17b3e5a3c162ed spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | locked | 64
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=16777216
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=64
+ ss=262144
+ bps=4
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 16252928 8
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00f7ffff | unlocked | 62
00f80000-00ffffff | locked | 2
+ flash_lock -u /dev/mtd0 16252928 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00fbffff | unlocked | 63
00fc0000-00ffffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 8
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0007ffff | locked | 2
00080000-00ffffff | unlocked | 62
+ flash_lock -u /dev/mtd0 262144 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | locked | 1
00040000-00ffffff | unlocked | 63
+ all_but_one=252
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 262144 252
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | unlocked | 1
00040000-00ffffff | locked | 63
+ flash_lock -u /dev/mtd0 262144 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0007ffff | unlocked | 2
00080000-00ffffff | locked | 62
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 252
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00fbffff | locked | 63
00fc0000-00ffffff | unlocked | 1
+ flash_lock -u /dev/mtd0 16252928 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00f7ffff | locked | 62
00f80000-00ffffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 7097948e7dba..4201bda91dcd 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -341,7 +341,7 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x60, 0x18),
.name = "w25q128fw",
.size = SZ_16M,
- .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
+ .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* W25Q256JW-Q/N */
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 07/25] mtd: spi-nor: winbond: W25Q64JW-M: Fill locking information
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (3 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 05/25] mtd: spi-nor: winbond: W25Q128JW-Q/N: " Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 08/25] mtd: spi-nor: winbond: W25Q128JW-M: " Miquel Raynal
` (16 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
The SFDP table does not advertize the locking capabilities of the
device, flag the missing capabilities.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x800000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
0ddafd3bffb8a1568f0621602caa65a527076307c7bd1a5dbab5b395c7047e39 spi_read
0ddafd3bffb8a1568f0621602caa65a527076307c7bd1a5dbab5b395c7047e39 spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | unlocked | 64
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x800000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
0ddafd3bffb8a1568f0621602caa65a527076307c7bd1a5dbab5b395c7047e39 spi_read
0ddafd3bffb8a1568f0621602caa65a527076307c7bd1a5dbab5b395c7047e39 spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
0ddafd3bffb8a1568f0621602caa65a527076307c7bd1a5dbab5b395c7047e39 spi_read
0ddafd3bffb8a1568f0621602caa65a527076307c7bd1a5dbab5b395c7047e39 spi_read2
0ddafd3bffb8a1568f0621602caa65a527076307c7bd1a5dbab5b395c7047e39 spi_test
0b78bc34748f826c82efbdd8264b931abedbc55b4798365364250ae56c476221 spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | locked | 64
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=8388608
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=64
+ ss=131072
+ bps=2
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 8126464 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007bffff | unlocked | 62
007c0000-007fffff | locked | 2
+ flash_lock -u /dev/mtd0 8126464 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007dffff | unlocked | 63
007e0000-007fffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | locked | 2
00040000-007fffff | unlocked | 62
+ flash_lock -u /dev/mtd0 131072 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | locked | 1
00020000-007fffff | unlocked | 63
+ all_but_one=126
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 131072 126
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | unlocked | 1
00020000-007fffff | locked | 63
+ flash_lock -u /dev/mtd0 131072 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | unlocked | 2
00040000-007fffff | locked | 62
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 126
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007dffff | locked | 63
007e0000-007fffff | unlocked | 1
+ flash_lock -u /dev/mtd0 8126464 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007bffff | locked | 62
007c0000-007fffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 1177e00513d7..d0da8f29fe5f 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -427,7 +427,7 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x80, 0x17),
.name = "w25q64jwm",
.size = SZ_8M,
- .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
+ .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* W25Q128JW-M */
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 08/25] mtd: spi-nor: winbond: W25Q128JW-M: Fill locking information
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (4 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 07/25] mtd: spi-nor: winbond: W25Q64JW-M: " Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 09/25] mtd: spi-nor: winbond: W25Q256JW-Q/N/M: " Miquel Raynal
` (15 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
The SFDP table does not advertize the locking capabilities of the
device, flag the missing capabilities.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x1000000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
96949af8654a85b6455db627c5154773954ab295742038c1bc95cbe29aa4bcb5 spi_read
96949af8654a85b6455db627c5154773954ab295742038c1bc95cbe29aa4bcb5 spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | unlocked | 64
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x1000000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
96949af8654a85b6455db627c5154773954ab295742038c1bc95cbe29aa4bcb5 spi_read
96949af8654a85b6455db627c5154773954ab295742038c1bc95cbe29aa4bcb5 spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
96949af8654a85b6455db627c5154773954ab295742038c1bc95cbe29aa4bcb5 spi_read
96949af8654a85b6455db627c5154773954ab295742038c1bc95cbe29aa4bcb5 spi_read2
96949af8654a85b6455db627c5154773954ab295742038c1bc95cbe29aa4bcb5 spi_test
ed7b778dfbd16c83772901462340558886b5adecd7d61b176996325ae4e4de9f spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | locked | 64
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=16777216
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=64
+ ss=262144
+ bps=4
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 16252928 8
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00f7ffff | unlocked | 62
00f80000-00ffffff | locked | 2
+ flash_lock -u /dev/mtd0 16252928 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00fbffff | unlocked | 63
00fc0000-00ffffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 8
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0007ffff | locked | 2
00080000-00ffffff | unlocked | 62
+ flash_lock -u /dev/mtd0 262144 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | locked | 1
00040000-00ffffff | unlocked | 63
+ all_but_one=252
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 262144 252
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | unlocked | 1
00040000-00ffffff | locked | 63
+ flash_lock -u /dev/mtd0 262144 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0007ffff | unlocked | 2
00080000-00ffffff | locked | 62
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 252
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00fbffff | locked | 63
00fc0000-00ffffff | unlocked | 1
+ flash_lock -u /dev/mtd0 16252928 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00f7ffff | locked | 62
00f80000-00ffffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index d0da8f29fe5f..4ffc7a39ac6d 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -434,7 +434,7 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x80, 0x18),
.name = "w25q128jwm",
.size = SZ_16M,
- .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
+ .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* W25Q256JW-M */
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 09/25] mtd: spi-nor: winbond: W25Q256JW-Q/N/M: Fill locking information
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (5 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 08/25] mtd: spi-nor: winbond: W25Q128JW-M: " Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 11/25] mtd: spi-nor: winbond: W25Q64JW-Q/N: Add quad page program capability Miquel Raynal
` (14 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
I do not have any W25Q256JW-Q/N/M in hand, but since all the other chips
from this family have the same locking pattern, we can reasonably expect
that these chips follow the exact same rules.
Add the missing CMP flags.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/spi-nor/winbond.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 4ffc7a39ac6d..62f69e868d7d 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -348,7 +348,8 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x60, 0x19),
.name = "w25q256jw",
.size = SZ_32M,
- .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | SPI_NOR_4BIT_BP,
+ .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 |
+ SPI_NOR_4BIT_BP | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* W25Q512NW-Q/N */
@@ -441,7 +442,8 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x80, 0x19),
.name = "w25q256jwm",
.size = SZ_32M,
- .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | SPI_NOR_4BIT_BP,
+ .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 |
+ SPI_NOR_4BIT_BP | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* W25Q512NW-M */
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 11/25] mtd: spi-nor: winbond: W25Q64JW-Q/N: Add quad page program capability
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (6 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 09/25] mtd: spi-nor: winbond: W25Q256JW-Q/N/M: " Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 12/25] mtd: spi-nor: winbond: W25Q128JW-Q/N: " Miquel Raynal
` (13 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
The benefit is not massive @25MHz, yet it is a supported feature
of the chip which is already handled by a flag, so let's enable it and
earn a few % write throughput.
Before:
$ flash_speed /dev/mtd0 -dc10
eraseblock write speed is 707 KiB/s
page write speed is 699 KiB/s
2 page write speed is 703 KiB/s
After:
$ flash_speed /dev/mtd0 -dc10
eraseblock write speed is 735 KiB/s
page write speed is 726 KiB/s
2 page write speed is 730 KiB/s
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x03
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3b
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbb
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6b
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 0
Supported page program modes by the flash
1S-1S-1S
opcode 0x02
1S-1S-4S
opcode 0x32
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 022fcfd05da2..7e79a415db4b 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -334,7 +334,7 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x60, 0x17),
.name = "w25q64dw",
.size = SZ_8M,
- .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
+ .flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* W25Q128FW-G/Q, W25Q128JW-Q/N */
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 12/25] mtd: spi-nor: winbond: W25Q128JW-Q/N: Add quad page program capability
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (7 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 11/25] mtd: spi-nor: winbond: W25Q64JW-Q/N: Add quad page program capability Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 13/25] mtd: spi-nor: winbond: W25Q32JW-M: " Miquel Raynal
` (12 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
The benefit is not massive @25MHz, yet it is a supported feature
of the chip which is already handled by a flag, so let's enable it and
earn a few % write throughput.
Before:
$ flash_speed /dev/mtd0 -dc10
eraseblock write speed is 378 KiB/s
page write speed is 375 KiB/s
2 page write speed is 375 KiB/s
After:
$ flash_speed /dev/mtd0 -dc10
eraseblock write speed is 386 KiB/s
page write speed is 382 KiB/s
2 page write speed is 384 KiB/s
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef6018
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
53464450060101ff00060110800000ff84000102d00000ffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520f9ffffffff0744eb086b083b42bbfeffffffffff
0000ffff40eb0c200f5210d800003602a60082ea14c9e96376337a757a75
f7bdd55c19f75dffe930f880ffffffffffffffffffffffffffffffff0000
f0ffffffffff
+ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
9f09054bceec22f43966246eb3043944d50cb679d0a56e8579f78ebe4f99b5a1 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x03
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3b
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbb
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6b
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 0
Supported page program modes by the flash
1S-1S-1S
opcode 0x02
1S-1S-4S
opcode 0x32
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 60 18 00 00 00
size 16.0 MiB
write size 1
page size 256
address nbytes 3
flags HAS_SR_TB | HAS_LOCK | HAS_16BIT_SR | SOFT_RESET | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xeb
dummy cycles 6
erase 0xd8
program 0x32
8D extension none
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
20 (4.00 KiB) [1]
52 (32.0 KiB) [2]
d8 (64.0 KiB) [3]
c7 (16.0 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+---------
00000000-00ffffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | unlocked | 64
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
a4fc3a4bd8163710f3a51f6bda131e0146dd7f9e92b7b201e0a8df18e7b89040 spi_read
a4fc3a4bd8163710f3a51f6bda131e0146dd7f9e92b7b201e0a8df18e7b89040 spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
a4fc3a4bd8163710f3a51f6bda131e0146dd7f9e92b7b201e0a8df18e7b89040 spi_test
+ mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NORFLASH
mtd.size = 16777216 (16M)
mtd.erasesize = 65536 (64K)
mtd.writesize = 1
mtd.oobsize = 0
regions = 0
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 7e79a415db4b..a4ac11785d25 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -341,7 +341,7 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x60, 0x18),
.name = "w25q128fw",
.size = SZ_16M,
- .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
+ .flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* W25Q256JW-Q/N */
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 13/25] mtd: spi-nor: winbond: W25Q32JW-M: Add quad page program capability
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (8 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 12/25] mtd: spi-nor: winbond: W25Q128JW-Q/N: " Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 14/25] mtd: spi-nor: winbond: W25Q64JW-M: " Miquel Raynal
` (11 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
The benefit is not massive @25MHz, yet it is a supported feature
of the chip which is already handled by a flag, so let's enable it and
earn a few % of write throughput.
Before:
$ flash_speed /dev/mtd0 -dc10
eraseblock write speed is 416 KiB/s
page write speed is 413 KiB/s
2 page write speed is 415 KiB/s
After:
$ flash_speed /dev/mtd0 -dc10
eraseblock write speed is 424 KiB/s
page write speed is 421 KiB/s
2 page write speed is 423 KiB/s
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x03
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3b
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbb
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6b
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 0
Supported page program modes by the flash
1S-1S-1S
opcode 0x02
1S-1S-4S
opcode 0x32
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 80 16 00 00 00
size 4.00 MiB
write size 1
page size 256
address nbytes 3
flags HAS_SR_TB | HAS_LOCK | HAS_16BIT_SR | SOFT_RESET | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xeb
dummy cycles 6
erase 0xd8
program 0x32
8D extension none
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
20 (4.00 KiB) [1]
52 (32.0 KiB) [2]
d8 (64.0 KiB) [3]
c7 (4.00 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+---------
00000000-003fffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003fffff | unlocked | 64
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
d5d5966e19c29fcd8007cf50d715943db3d8468d3f93a71a43d2c026c1cbfb00 spi_read
d5d5966e19c29fcd8007cf50d715943db3d8468d3f93a71a43d2c026c1cbfb00 spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
d5d5966e19c29fcd8007cf50d715943db3d8468d3f93a71a43d2c026c1cbfb00 spi_test
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index a4ac11785d25..98a1e063e7fe 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -420,7 +420,7 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x80, 0x16),
.name = "w25q32jwm",
.size = SZ_4M,
- .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
+ .flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
}, {
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 14/25] mtd: spi-nor: winbond: W25Q64JW-M: Add quad page program capability
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (9 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 13/25] mtd: spi-nor: winbond: W25Q32JW-M: " Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 16/25] mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-Q/N parts Miquel Raynal
` (10 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
The benefit is not massive @25MHz, yet it is a supported feature
of the chip which is already handled by a flag, so let's enable it and
earn a few % of write throughput.
Before:
$ flash_speed /dev/mtd0 -dc10
eraseblock write speed is 707 KiB/s
page write speed is 699 KiB/s
2 page write speed is 703 KiB/s
After:
$ flash_speed /dev/mtd0 -dc10
eraseblock write speed is 739 KiB/s
page write speed is 730 KiB/s
2 page write speed is 733 KiB/s
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef8017
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
53464450060101ff00060110800000ff84000102d00000ffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520f9ffffffff0344eb086b083b42bbfeffffffffff
0000ffff40eb0c200f5210d800003602a60082ea14c4e96376337a757a75
f7bdd55c19f75dffe930f880ffffffffffffffffffffffffffffffff0000
f0ffffffffff
+ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
4b9a53f823cc5483babb4b6a8e816cb9ae11cbb7021cfb375bead1c42ae98fc2 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x03
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3b
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbb
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6b
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 0
Supported page program modes by the flash
1S-1S-1S
opcode 0x02
1S-1S-4S
opcode 0x32
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 80 17 00 00 00
size 8.00 MiB
write size 1
page size 256
address nbytes 3
flags HAS_SR_TB | HAS_LOCK | HAS_16BIT_SR | SOFT_RESET | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xeb
dummy cycles 6
erase 0xd8
program 0x32
8D extension none
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
20 (4.00 KiB) [1]
52 (32.0 KiB) [2]
d8 (64.0 KiB) [3]
c7 (8.00 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+---------
00000000-007fffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | unlocked | 64
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
819fcf52ab4866740190d2eed271f1b30341619e598386a6d7566154f5b2d979 spi_read
819fcf52ab4866740190d2eed271f1b30341619e598386a6d7566154f5b2d979 spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
819fcf52ab4866740190d2eed271f1b30341619e598386a6d7566154f5b2d979 spi_test
+ mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NORFLASH
mtd.size = 8388608 (8M)
mtd.erasesize = 65536 (64K)
mtd.writesize = 1
mtd.oobsize = 0
regions = 0
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 98a1e063e7fe..945363fd52a2 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -428,7 +428,7 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x80, 0x17),
.name = "w25q64jwm",
.size = SZ_8M,
- .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
+ .flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* W25Q128JW-M */
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 16/25] mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-Q/N parts
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (10 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 14/25] mtd: spi-nor: winbond: W25Q64JW-M: " Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-18 9:11 ` Michael Walle
2026-09-09 15:25 ` [PATCH 17/25] mtd: spi-nor: winbond: Add support for W25Q33PW-Q/N Miquel Raynal
` (9 subsequent siblings)
21 siblings, 1 reply; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
There is an ID collision between chips of same density from the JW
family (which it self conflicted with yet another family) with new PW
parts. Chips are very similar in practice, it is mostly a matter of
electrical differences (mostly power consumption being lower) as well as
the addition of inline ECC capability for the higher devices (> 32Mb).
Chips with ECC capability protect 16 bytes chunks are against single
errors. In case a non-aligned write happens, ECC is locally disabled
until the next erase.
Another significant difference is that PW chips identify themselves as
supporting the new SFDP (rev F) QER field which forces an alternate
write SR2 opcode (0x31).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/spi-nor/winbond.c | 55 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 55 insertions(+)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index fbad9e408d7a..efa9de1f0f66 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -71,6 +71,41 @@ static bool winbond_rv_match(const struct spi_nor *nor)
return nor->sfdp && is_w25qxxrv(nor);
}
+static bool is_w25qxxpw(const struct spi_nor *nor)
+{
+ struct sfdp_header *sfdp_h = spi_nor_sfdp_get_header(nor);
+
+ /*
+ * W25QxxPW chips re-use the same ID as the W25QxxJW/NW family.
+ *
+ * Chips are very similar, W25QxxPW brings mostly performance and power
+ * consumption improvements. One key difference in behaviour is the
+ * automatic 16-byte based error correction.
+ *
+ * They can be distinguished based on their SFDP minor revision:
+ * W25QxxJW: JESD216B, minor revision == 06h
+ * W25Q51/01/02NW: JESD216B, minor revision == 06h
+ * W25QxxPW: JESD216F, minor revision >= 0Ah
+ */
+ return sfdp_h->minor >= SFDP_JESD216F_MINOR;
+}
+
+static bool winbond_pw_match(const struct spi_nor *nor)
+{
+ return nor->sfdp && is_w25qxxpw(nor);
+}
+
+static bool winbond_pw_with_ecc_match(const struct spi_nor *nor)
+{
+ const struct spi_nor_id *id = nor->info->id;
+
+ if (!winbond_pw_match(nor))
+ return false;
+
+ /* W25Q33PW chips (id[2] == 0x16) do not have built-in ECC support */
+ return id->len == 3 && id->bytes[2] >= 0x17;
+}
+
static int
w25q128_post_bfpt_fixups(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
@@ -201,6 +236,22 @@ static const struct spi_nor_fixups winbond_nor_partname_fixups = {
.post_sfdp = winbond_nor_partname_post_sfdp_fixups,
};
+static int winbond_nor_ecc_configuration_post_sfdp_fixups(struct spi_nor *nor)
+{
+ /*
+ * PW chips feature automatic error correction. Non 16-byte aligned
+ * writes work, but disable error correction on the region until next erase.
+ */
+ nor->params->writesize = 16;
+ nor->params->flags |= SNOR_F_ECC;
+
+ return 0;
+}
+
+static const struct spi_nor_fixups winbond_nor_ecc_configuration_fixups = {
+ .post_sfdp = winbond_nor_ecc_configuration_post_sfdp_fixups,
+};
+
static const struct flash_info winbond_nor_parts[] = {
{
.id = SNOR_ID(0xef, 0x30, 0x10),
@@ -622,6 +673,10 @@ static const struct spi_nor_fixup winbond_fixups[] = {
.fixups = &winbond_nor_multi_die_fixups },
{ .id = SNOR_ID(0xef, 0x40, 0x22), .match = winbond_jv_match,
.fixups = &winbond_nor_multi_die_fixups },
+ { .id = SNOR_ID(0xef, 0x60), .match = winbond_pw_with_ecc_match,
+ .fixups = &winbond_nor_ecc_configuration_fixups },
+ { .id = SNOR_ID(0xef, 0x60), .match = winbond_pw_match,
+ .fixups = &winbond_nor_partname_fixups },
{ .id = SNOR_ID(0xef, 0x70), .match = winbond_rv_match,
.fixups = &winbond_nor_partname_fixups },
{ .id = SNOR_ID(0xef, 0x70, 0x18), .fixups = &w25q128_fixups },
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCH 16/25] mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-Q/N parts
2026-09-09 15:25 ` [PATCH 16/25] mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-Q/N parts Miquel Raynal
@ 2026-09-18 9:11 ` Michael Walle
2026-09-18 10:20 ` Miquel Raynal
0 siblings, 1 reply; 26+ messages in thread
From: Michael Walle @ 2026-09-18 9:11 UTC (permalink / raw)
To: Miquel Raynal, Pratyush Yadav, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 4393 bytes --]
On Wed Sep 9, 2026 at 5:25 PM CEST, Miquel Raynal wrote:
> There is an ID collision between chips of same density from the JW
> family (which it self conflicted with yet another family) with new PW
> parts. Chips are very similar in practice, it is mostly a matter of
> electrical differences (mostly power consumption being lower) as well as
> the addition of inline ECC capability for the higher devices (> 32Mb).
>
> Chips with ECC capability protect 16 bytes chunks are against single
> errors. In case a non-aligned write happens, ECC is locally disabled
> until the next erase.
>
> Another significant difference is that PW chips identify themselves as
> supporting the new SFDP (rev F) QER field which forces an alternate
> write SR2 opcode (0x31).
>
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
> drivers/mtd/spi-nor/winbond.c | 55 +++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 55 insertions(+)
>
> diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
> index fbad9e408d7a..efa9de1f0f66 100644
> --- a/drivers/mtd/spi-nor/winbond.c
> +++ b/drivers/mtd/spi-nor/winbond.c
> @@ -71,6 +71,41 @@ static bool winbond_rv_match(const struct spi_nor *nor)
> return nor->sfdp && is_w25qxxrv(nor);
> }
>
> +static bool is_w25qxxpw(const struct spi_nor *nor)
> +{
> + struct sfdp_header *sfdp_h = spi_nor_sfdp_get_header(nor);
> +
> + /*
> + * W25QxxPW chips re-use the same ID as the W25QxxJW/NW family.
> + *
> + * Chips are very similar, W25QxxPW brings mostly performance and power
> + * consumption improvements. One key difference in behaviour is the
> + * automatic 16-byte based error correction.
> + *
> + * They can be distinguished based on their SFDP minor revision:
> + * W25QxxJW: JESD216B, minor revision == 06h
> + * W25Q51/01/02NW: JESD216B, minor revision == 06h
> + * W25QxxPW: JESD216F, minor revision >= 0Ah
> + */
> + return sfdp_h->minor >= SFDP_JESD216F_MINOR;
> +}
> +
> +static bool winbond_pw_match(const struct spi_nor *nor)
> +{
> + return nor->sfdp && is_w25qxxpw(nor);
> +}
> +
> +static bool winbond_pw_with_ecc_match(const struct spi_nor *nor)
> +{
> + const struct spi_nor_id *id = nor->info->id;
> +
> + if (!winbond_pw_match(nor))
> + return false;
> +
> + /* W25Q33PW chips (id[2] == 0x16) do not have built-in ECC support */
The commit message mentions ECC is available for >= 32Mbit. Doesn't
align with this comment. Also about the 8MBit and 16Mbit ones?
"W25QxxPW chips smaller than 32MBit doesn't provide built-in ECC support"?
If you like I could rewrite it as I'll apply it. The rest of this
series looks good.
> + return id->len == 3 && id->bytes[2] >= 0x17;
Then this makes more sense.
-michael
> +}
> +
> static int
> w25q128_post_bfpt_fixups(struct spi_nor *nor,
> const struct sfdp_parameter_header *bfpt_header,
> @@ -201,6 +236,22 @@ static const struct spi_nor_fixups winbond_nor_partname_fixups = {
> .post_sfdp = winbond_nor_partname_post_sfdp_fixups,
> };
>
> +static int winbond_nor_ecc_configuration_post_sfdp_fixups(struct spi_nor *nor)
> +{
> + /*
> + * PW chips feature automatic error correction. Non 16-byte aligned
> + * writes work, but disable error correction on the region until next erase.
> + */
> + nor->params->writesize = 16;
> + nor->params->flags |= SNOR_F_ECC;
> +
> + return 0;
> +}
> +
> +static const struct spi_nor_fixups winbond_nor_ecc_configuration_fixups = {
> + .post_sfdp = winbond_nor_ecc_configuration_post_sfdp_fixups,
> +};
> +
> static const struct flash_info winbond_nor_parts[] = {
> {
> .id = SNOR_ID(0xef, 0x30, 0x10),
> @@ -622,6 +673,10 @@ static const struct spi_nor_fixup winbond_fixups[] = {
> .fixups = &winbond_nor_multi_die_fixups },
> { .id = SNOR_ID(0xef, 0x40, 0x22), .match = winbond_jv_match,
> .fixups = &winbond_nor_multi_die_fixups },
> + { .id = SNOR_ID(0xef, 0x60), .match = winbond_pw_with_ecc_match,
> + .fixups = &winbond_nor_ecc_configuration_fixups },
> + { .id = SNOR_ID(0xef, 0x60), .match = winbond_pw_match,
> + .fixups = &winbond_nor_partname_fixups },
> { .id = SNOR_ID(0xef, 0x70), .match = winbond_rv_match,
> .fixups = &winbond_nor_partname_fixups },
> { .id = SNOR_ID(0xef, 0x70, 0x18), .fixups = &w25q128_fixups },
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 297 bytes --]
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCH 16/25] mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-Q/N parts
2026-09-18 9:11 ` Michael Walle
@ 2026-09-18 10:20 ` Miquel Raynal
0 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-18 10:20 UTC (permalink / raw)
To: Michael Walle
Cc: Pratyush Yadav, Takahiro Kuwano, Richard Weinberger,
Vignesh Raghavendra, Thomas Petazzoni, Steam Lin, linux-mtd,
linux-kernel
>> +static bool winbond_pw_with_ecc_match(const struct spi_nor *nor)
>> +{
>> + const struct spi_nor_id *id = nor->info->id;
>> +
>> + if (!winbond_pw_match(nor))
>> + return false;
>> +
>> + /* W25Q33PW chips (id[2] == 0x16) do not have built-in ECC support */
>
> The commit message mentions ECC is available for >= 32Mbit. Doesn't
> align with this comment. Also about the 8MBit and 16Mbit ones?
You're right, there are 8 and 16Mb chips which I haven't in hands and
therefore forgot about. The return line below is correct.
> "W25QxxPW chips smaller than 32MBit doesn't provide built-in ECC
> support"?
32Mb chips do not have ECC capability either, so maybe:
/* W25QxxPW densities <= 32 Mbit (id[2] <= 0x16) do not have built-in ECC support */
> If you like I could rewrite it as I'll apply it. The rest of this
> series looks good.
Yes, thank you!
>
>> + return id->len == 3 && id->bytes[2] >= 0x17;
>
> Then this makes more sense.
>
> -michael
Thanks,
Miquèl
^ permalink raw reply [flat|nested] 26+ messages in thread
* [PATCH 17/25] mtd: spi-nor: winbond: Add support for W25Q33PW-Q/N
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (11 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 16/25] mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-Q/N parts Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 18/25] mtd: spi-nor: winbond: Add support for W25Q64PW-Q/N Miquel Raynal
` (8 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
There is an ID collision with chips of same density from the JW family
(which it self conflicted with yet another family). Chips are very
similar in practice, it is mostly a matter of electrical differences
(mostly power consumption being lower) as well as the addition of inline
ECC capability.
16 bytes chunks are protected against single errors. In case a
non-aligned write happens, ECC is locally disabled until the next erase.
Another significant difference is that PW chips identify themselves as
supporting the new SFDP (rev F) QER field which forces an alternate
write SR2 opcode (0x31).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef6016
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p p/sys/us/spi/devices/spi0.0/spi-nor/sfdp
534644500a0100ff00080117800000ffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520f9ffffffff0144eb086b083b42bbfeffffffffff
0000ffff44eb0c200f5210d800001432010181e314c2e96376337a757a75
f7a9d55c39f66dffe930f880000000000000ac0000000000f7f5ffff0f00
0000060d44bd27ed080d
+ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
9b4e76b3ab30d374abbf4cc35893b86e3891acd0c86ba4d8deb111b42f890036 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x03
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3b
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbb
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6b
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
Supported page program modes by the flash
1S-1S-1S
opcode 0x02
1S-1S-4S
opcode 0x32
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 60 16 00 00 00
size 4.00 MiB
write size 16
page size 256
address nbytes 3
flags HAS_SR_TB | HAS_LOCK | SOFT_RESET | ECC | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xeb
dummy cycles 6
erase 0xd8
program 0x32
8D extension repeat
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
20 (4.00 KiB) [1]
52 (32.0 KiB) [2]
d8 (64.0 KiB) [3]
c7 (4.00 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+---------
00000000-003fffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003fffff | unlocked | 64
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
2fe145f574fac7fcef563647ebaba99ec9226462f5fd520601bbd2cee946529b spi_read
2fe145f574fac7fcef563647ebaba99ec9226462f5fd520601bbd2cee946529b spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
2fe145f574fac7fcef563647ebaba99ec9226462f5fd520601bbd2cee946529b spi_test
+ mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NANDFLASH
mtd.size = 4194304 (4M)
mtd.erasesize = 65536 (64K)
mtd.writesize = 16
mtd.oobsize = 0
regions = 0
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x400000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
2fe145f574fac7fcef563647ebaba99ec9226462f5fd520601bbd2cee946529b spi_read
2fe145f574fac7fcef563647ebaba99ec9226462f5fd520601bbd2cee946529b spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003fffff | unlocked | 64
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x400000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
2fe145f574fac7fcef563647ebaba99ec9226462f5fd520601bbd2cee946529b spi_read
2fe145f574fac7fcef563647ebaba99ec9226462f5fd520601bbd2cee946529b spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
2fe145f574fac7fcef563647ebaba99ec9226462f5fd520601bbd2cee946529b spi_read
2fe145f574fac7fcef563647ebaba99ec9226462f5fd520601bbd2cee946529b spi_read2
2fe145f574fac7fcef563647ebaba99ec9226462f5fd520601bbd2cee946529b spi_test
5a4c95f5e812cf8d0123ddb8fc0cece797e41e0ad76ab35340c5680ebdd54073 spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003fffff | locked | 64
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=4194304
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=64
+ ss=65536
+ bps=1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 4063232 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003dffff | unlocked | 62
003e0000-003fffff | locked | 2
+ flash_lock -u /dev/mtd0 4063232 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003effff | unlocked | 63
003f0000-003fffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | locked | 2
00020000-003fffff | unlocked | 62
+ flash_lock -u /dev/mtd0 65536 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0000ffff | locked | 1
00010000-003fffff | unlocked | 63
+ all_but_one=63
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 65536 63
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0000ffff | unlocked | 1
00010000-003fffff | locked | 63
+ flash_lock -u /dev/mtd0 65536 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | unlocked | 2
00020000-003fffff | locked | 62
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 63
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003effff | locked | 63
003f0000-003fffff | unlocked | 1
+ flash_lock -u /dev/mtd0 4063232 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003dffff | locked | 62
003e0000-003fffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index efa9de1f0f66..60dacfa0eabe 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -373,7 +373,7 @@ static const struct flash_info winbond_nor_parts[] = {
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
- /* W25Q32DW-P/G, W25Q32FW-G/Q, W25Q32JW-Q/N */
+ /* W25Q32DW-P/G, W25Q32FW-G/Q, W25Q32JW-Q/N, W25Q33PW-Q/N */
.id = SNOR_ID(0xef, 0x60, 0x16),
.name = "w25q32dw",
.size = SZ_4M,
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 18/25] mtd: spi-nor: winbond: Add support for W25Q64PW-Q/N
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (12 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 17/25] mtd: spi-nor: winbond: Add support for W25Q33PW-Q/N Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 19/25] mtd: spi-nor: winbond: Add support for W25Q12PW-Q/N Miquel Raynal
` (7 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
There is an ID collision with chips of same density from the JW family
(which it self conflicted with yet another family). Chips are very
similar in practice, it is mostly a matter of electrical differences
(mostly power consumption being lower) as well as the addition of inline
ECC capability.
16 bytes chunks are protected against single errors. In case a
non-aligned write happens, ECC is locally disabled until the next erase.
Another significant difference is that PW chips identify themselves as
supporting the new SFDP (rev F) QER field which forces an alternate
write SR2 opcode (0x31).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef6017
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
534644500a0100ff00080117800000ffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520f9ffffffff0344eb086b083b42bbfeffffffffff
0000ffff44eb0c200f5210d80000142a010186e114c1e96376337a757a75
f7a2d55c39f66dffe930f880000000000000ac0000000000f7f5ffff0f00
0000060d44bd27ed080d
+ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
94b52d6e903a2046e144eab0760384b6932c6fdbfec17eb7336f1778c3898daf /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x03
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3b
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbb
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6b
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
Supported page program modes by the flash
1S-1S-1S
opcode 0x02
1S-1S-4S
opcode 0x32
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 60 17 00 00 00
size 8.00 MiB
write size 16
page size 256
address nbytes 3
flags HAS_SR_TB | HAS_LOCK | SOFT_RESET | ECC | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xeb
dummy cycles 6
erase 0xd8
program 0x32
8D extension repeat
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
20 (4.00 KiB) [1]
52 (32.0 KiB) [2]
d8 (64.0 KiB) [3]
c7 (8.00 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+---------
00000000-007fffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | unlocked | 64
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 115.019352] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 118.449659] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4e60da5ba4514b322c9ef27604a6974ba40a3395a197b618ad9922f79d7fc847 spi_read
4e60da5ba4514b322c9ef27604a6974ba40a3395a197b618ad9922f79d7fc847 spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 123.409877] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
4e60da5ba4514b322c9ef27604a6974ba40a3395a197b618ad9922f79d7fc847 spi_test
+ mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NANDFLASH
mtd.size = 8388608 (8M)
mtd.erasesize = 65536 (64K)
mtd.writesize = 16
mtd.oobsize = 0
regions = 0
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x800000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 127.458853] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4e60da5ba4514b322c9ef27604a6974ba40a3395a197b618ad9922f79d7fc847 spi_read
4e60da5ba4514b322c9ef27604a6974ba40a3395a197b618ad9922f79d7fc847 spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | unlocked | 64
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x800000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 129.128621] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4e60da5ba4514b322c9ef27604a6974ba40a3395a197b618ad9922f79d7fc847 spi_read
4e60da5ba4514b322c9ef27604a6974ba40a3395a197b618ad9922f79d7fc847 spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
[ 131.565787] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
4e60da5ba4514b322c9ef27604a6974ba40a3395a197b618ad9922f79d7fc847 spi_read
4e60da5ba4514b322c9ef27604a6974ba40a3395a197b618ad9922f79d7fc847 spi_read2
4e60da5ba4514b322c9ef27604a6974ba40a3395a197b618ad9922f79d7fc847 spi_test
b78aa1fb51c98dfe5d915bcada1e605c45b30709a16ec879afd8078ef63f21b3 spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | locked | 64
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=8388608
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=64
+ ss=131072
+ bps=2
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 8126464 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007bffff | unlocked | 62
007c0000-007fffff | locked | 2
+ flash_lock -u /dev/mtd0 8126464 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007dffff | unlocked | 63
007e0000-007fffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | locked | 2
00040000-007fffff | unlocked | 62
+ flash_lock -u /dev/mtd0 131072 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | locked | 1
00020000-007fffff | unlocked | 63
+ all_but_one=126
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 131072 126
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | unlocked | 1
00020000-007fffff | locked | 63
+ flash_lock -u /dev/mtd0 131072 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | unlocked | 2
00040000-007fffff | locked | 62
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 126
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007dffff | locked | 63
007e0000-007fffff | unlocked | 1
+ flash_lock -u /dev/mtd0 8126464 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007bffff | locked | 62
007c0000-007fffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 60dacfa0eabe..bcae45df7416 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -381,7 +381,7 @@ static const struct flash_info winbond_nor_parts[] = {
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
}, {
- /* W25Q64DW-P/G, W25Q64FW-G/Q, W25Q64JW-Q/N */
+ /* W25Q64DW-P/G, W25Q64FW-G/Q, W25Q64JW-Q/N, W25Q64PW-Q/N */
.id = SNOR_ID(0xef, 0x60, 0x17),
.name = "w25q64dw",
.size = SZ_8M,
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 19/25] mtd: spi-nor: winbond: Add support for W25Q12PW-Q/N
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (13 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 18/25] mtd: spi-nor: winbond: Add support for W25Q64PW-Q/N Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 20/25] mtd: spi-nor: winbond: Add support for W25Q25PW-Q/N Miquel Raynal
` (6 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
There is an ID collision with chips of same density from the JW family
(which it self conflicted with yet another family). Chips are very
similar in practice, it is mostly a matter of electrical differences
(mostly power consumption being lower) as well as the addition of inline
ECC capability.
16 bytes chunks are protected against single errors. In case a
non-aligned write happens, ECC is locally disabled until the next erase.
Another significant difference is that PW chips identify themselves as
supporting the new SFDP (rev F) QER field which forces an alternate
write SR2 opcode (0x31).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef6018
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
534644500a0100ff00080117800000ffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520f9ffffffff0744eb086b083b42bbfeffffffffff
0000ffff44eb0c200f5210d80000162a010186e114c2e96376337a757a75
f7a2d55c39f66dffe930f8800000000000002c0000000000f6f4ffff0f00
0000060d44bd27ed080d
+ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
c75ed992ea0351bcecb90f163e1e1c60134b42329bd5d243fb3b8b7fccc5f191 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x03
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3b
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbb
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6b
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
Supported page program modes by the flash
1S-1S-1S
opcode 0x02
1S-1S-4S
opcode 0x32
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 60 18 00 00 00
size 16.0 MiB
write size 16
page size 256
address nbytes 3
flags HAS_SR_TB | HAS_LOCK | SOFT_RESET | ECC | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xeb
dummy cycles 6
erase 0xd8
program 0x32
8D extension repeat
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
20 (4.00 KiB) [1]
52 (32.0 KiB) [2]
d8 (64.0 KiB) [3]
c7 (16.0 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+---------
00000000-00ffffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | unlocked | 64
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
[ 8.632646] random: crng init done
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 12.751052] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 16.108898] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
25ff7ef1035a41d8af9df41ede8b2e77c8d3b5d2631188bdc3faa340030e92ca spi_read
25ff7ef1035a41d8af9df41ede8b2e77c8d3b5d2631188bdc3faa340030e92ca spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 20.442758] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
25ff7ef1035a41d8af9df41ede8b2e77c8d3b5d2631188bdc3faa340030e92ca spi_test
+ mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NANDFLASH
mtd.size = 16777216 (16M)
mtd.erasesize = 65536 (64K)
mtd.writesize = 16
mtd.oobsize = 0
regions = 0
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x1000000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 24.388330] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
25ff7ef1035a41d8af9df41ede8b2e77c8d3b5d2631188bdc3faa340030e92ca spi_read
25ff7ef1035a41d8af9df41ede8b2e77c8d3b5d2631188bdc3faa340030e92ca spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | unlocked | 64
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x1000000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 26.058557] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
25ff7ef1035a41d8af9df41ede8b2e77c8d3b5d2631188bdc3faa340030e92ca spi_read
25ff7ef1035a41d8af9df41ede8b2e77c8d3b5d2631188bdc3faa340030e92ca spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
[ 28.495793] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
25ff7ef1035a41d8af9df41ede8b2e77c8d3b5d2631188bdc3faa340030e92ca spi_read
25ff7ef1035a41d8af9df41ede8b2e77c8d3b5d2631188bdc3faa340030e92ca spi_read2
25ff7ef1035a41d8af9df41ede8b2e77c8d3b5d2631188bdc3faa340030e92ca spi_test
cc82f5dade79cb7aaf1050756458b0c6033e7a043604afeee42721d9461e0cca spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | locked | 64
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=16777216
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=64
+ ss=262144
+ bps=4
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 16252928 8
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00f7ffff | unlocked | 62
00f80000-00ffffff | locked | 2
+ flash_lock -u /dev/mtd0 16252928 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00fbffff | unlocked | 63
00fc0000-00ffffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 8
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0007ffff | locked | 2
00080000-00ffffff | unlocked | 62
+ flash_lock -u /dev/mtd0 262144 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | locked | 1
00040000-00ffffff | unlocked | 63
+ all_but_one=252
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 262144 252
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | unlocked | 1
00040000-00ffffff | locked | 63
+ flash_lock -u /dev/mtd0 262144 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0007ffff | unlocked | 2
00080000-00ffffff | locked | 62
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 252
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00fbffff | locked | 63
00fc0000-00ffffff | unlocked | 1
+ flash_lock -u /dev/mtd0 16252928 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00f7ffff | locked | 62
00f80000-00ffffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index bcae45df7416..76bd1a346fac 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -388,7 +388,7 @@ static const struct flash_info winbond_nor_parts[] = {
.flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
- /* W25Q128FW-G/Q, W25Q128JW-Q/N */
+ /* W25Q128FW-G/Q, W25Q128JW-Q/N, W25Q12PW-Q/N */
.id = SNOR_ID(0xef, 0x60, 0x18),
.name = "w25q128fw",
.size = SZ_16M,
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 20/25] mtd: spi-nor: winbond: Add support for W25Q25PW-Q/N
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (14 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 19/25] mtd: spi-nor: winbond: Add support for W25Q12PW-Q/N Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 21/25] mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-M parts Miquel Raynal
` (5 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
There is an ID collision with chips of same density from the JW family
(which it self conflicted with yet another family). Chips are very
similar in practice, it is mostly a matter of electrical differences
(mostly power consumption being lower) as well as the addition of inline
ECC capability.
16 bytes chunks are protected against single errors. In case a
non-aligned write happens, ECC is locally disabled until the next erase.
Another significant difference is that PW chips identify themselves as
supporting the new SFDP (rev F) QER field which forces an alternate
write SR2 opcode (0x31).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef6019
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
534644500a0101ff00080117800000ff84010102e00000ffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520fbffffffff0f44eb086b083b42bbfeffffffffff
0000ffff44eb0c200f5210d80000142a010186e114c4e96376337a757a75
f7a4d55c39f66dffe970f9a50000000000002c0000000000f7f5ffff0f00
0000060d44bd27ed080dffffffffff0a00fe21ffdcff
+ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
55268b59c742e7b0fde6cf6c5601676e9e4666daec41316171feb82f0d2d5352 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x13
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3c
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbc
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6c
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xec
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xec
mode cycles 2
dummy cycles 4
Supported page program modes by the flash
1S-1S-1S
opcode 0x12
1S-1S-4S
opcode 0x34
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 60 19 00 00 00
size 32.0 MiB
write size 16
page size 256
address nbytes 4
flags HAS_SR_TB | 4B_OPCODES | HAS_4BAIT | HAS_LOCK | HAS_SR_TB_BIT6 | HAS_4BIT_BP | SOFT_RESET | ECC | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xec
dummy cycles 6
erase 0xdc
program 0x34
8D extension repeat
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
21 (4.00 KiB) [1]
dc (64.0 KiB) [3]
c7 (32.0 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+---------
00000000-01ffffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01ffffff | unlocked | 512
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
[ 16.617667] random: crng init done
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 18.720786] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 22.127861] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
fa35f237917a2785516d21e010b8422cbe5e49ba88b962696f188ce807c1857e spi_read
fa35f237917a2785516d21e010b8422cbe5e49ba88b962696f188ce807c1857e spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 26.680043] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
fa35f237917a2785516d21e010b8422cbe5e49ba88b962696f188ce807c1857e spi_test
+ mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NANDFLASH
mtd.size = 33554432 (32M)
mtd.erasesize = 65536 (64K)
mtd.writesize = 16
mtd.oobsize = 0
regions = 0
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x2000000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_rea[ 30.654003] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
d
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
fa35f237917a2785516d21e010b8422cbe5e49ba88b962696f188ce807c1857e spi_read
fa35f237917a2785516d21e010b8422cbe5e49ba88b962696f188ce807c1857e spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01ffffff | unlocked | 512
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x2000000
Lock status: locked
[ 32.326253] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
fa35f237917a2785516d21e010b8422cbe5e49ba88b962696f188ce807c1857e spi_read
fa35f237917a2785516d21e010b8422cbe5e49ba88b962696f188ce807c1857e spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug[ 34.766835] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
read /dev/mtd0 0 2097152 spi_read2
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
fa35f237917a2785516d21e010b8422cbe5e49ba88b962696f188ce807c1857e spi_read
fa35f237917a2785516d21e010b8422cbe5e49ba88b962696f188ce807c1857e spi_read2
fa35f237917a2785516d21e010b8422cbe5e49ba88b962696f188ce807c1857e spi_test
63bfc5b2f0f156a1a4551d6511d4d20b5b6d5cd12b825a6ceb66d167f1223ef8 spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01ffffff | locked | 512
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=33554432
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=512
+ ss=65536
+ bps=1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 33423360 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01fdffff | unlocked | 510
01fe0000-01ffffff | locked | 2
+ flash_lock -u /dev/mtd0 33423360 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01feffff | unlocked | 511
01ff0000-01ffffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 25165824 128
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-017fffff | unlocked | 384
01800000-01ffffff | locked | 128
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | locked | 2
00020000-01ffffff | unlocked | 510
+ flash_lock -u /dev/mtd0 65536 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0000ffff | locked | 1
00010000-01ffffff | unlocked | 511
+ all_but_one=511
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 65536 511
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0000ffff | unlocked | 1
00010000-01ffffff | locked | 511
+ flash_lock -u /dev/mtd0 65536 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | unlocked | 2
00020000-01ffffff | locked | 510
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 511
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01feffff | locked | 511
01ff0000-01ffffff | unlocked | 1
+ flash_lock -u /dev/mtd0 33423360 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01fdffff | locked | 510
01fe0000-01ffffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 76bd1a346fac..9f6eeaf0c32d 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -395,7 +395,7 @@ static const struct flash_info winbond_nor_parts[] = {
.flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
- /* W25Q256JW-Q/N */
+ /* W25Q256JW-Q/N, W25Q25PW-Q/N */
.id = SNOR_ID(0xef, 0x60, 0x19),
.name = "w25q256jw",
.size = SZ_32M,
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 21/25] mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-M parts
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (15 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 20/25] mtd: spi-nor: winbond: Add support for W25Q25PW-Q/N Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 22/25] mtd: spi-nor: winbond: Add support for W25Q33PW-M Miquel Raynal
` (4 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
There is an ID collision between chips of same density from the JW
family (which it self conflicted with yet another family) with new PW
parts. Chips are very similar in practice, it is mostly a matter of
electrical differences (mostly power consumption being lower) as well as
the addition of inline ECC capability for the higher devices (> 32Mb).
Chips with ECC capability protect 16 bytes chunks are against single
errors. In case a non-aligned write happens, ECC is locally disabled
until the next erase.
Another significant difference is that PW chips identify themselves as
supporting the new SFDP (rev F) QER field which forces an alternate
write SR2 opcode (0x31).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/mtd/spi-nor/winbond.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 9f6eeaf0c32d..0c5c195ad472 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -684,6 +684,10 @@ static const struct spi_nor_fixup winbond_fixups[] = {
.fixups = &winbond_nor_multi_die_fixups },
{ .id = SNOR_ID(0xef, 0x70, 0x22), .match = winbond_jv_match,
.fixups = &winbond_nor_multi_die_fixups },
+ { .id = SNOR_ID(0xef, 0x80), .match = winbond_pw_with_ecc_match,
+ .fixups = &winbond_nor_ecc_configuration_fixups },
+ { .id = SNOR_ID(0xef, 0x80), .match = winbond_pw_match,
+ .fixups = &winbond_nor_partname_fixups },
};
const struct spi_nor_manufacturer spi_nor_winbond = {
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 22/25] mtd: spi-nor: winbond: Add support for W25Q33PW-M
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (16 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 21/25] mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-M parts Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 23/25] mtd: spi-nor: winbond: Add support for W25Q64PW-M Miquel Raynal
` (3 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
There is an ID collision with chips of same density from the JW family
(which it self conflicted with yet another family). Chips are very
similar in practice, it is mostly a matter of electrical differences
(mostly power consumption being lower) as well as the addition of inline
ECC capability.
16 bytes chunks are protected against single errors. In case a
non-aligned write happens, ECC is locally disabled until the next erase.
Another significant difference is that PW chips identify themselves as
supporting the new SFDP (rev F) QER field which forces an alternate
write SR2 opcode (0x31).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef8016
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
534644500a0100ff00080117800000ffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520f9ffffffff0144eb086b083b42bbfeffffffffff
0000ffff44eb0c200f5210d800001432010181e314c2e96376337a757a75
f7a9d55c39f66dffe930f880000000000000ac0000000000f7f5ffff0f00
0000060d44bd27ed080d
+ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
9b4e76b3ab30d374abbf4cc35893b86e3891acd0c86ba4d8deb111b42f890036 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x03
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3b
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbb
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6b
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
Supported page program modes by the flash
1S-1S-1S
opcode 0x02
1S-1S-4S
opcode 0x32
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 80 16 00 00 00
size 4.00 MiB
write size 16
page size 256
address nbytes 3
flags HAS_SR_TB | HAS_LOCK | SOFT_RESET | ECC | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xeb
dummy cycles 6
erase 0xd8
program 0x32
8D extension repeat
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
20 (4.00 KiB) [1]
52 (32.0 KiB) [2]
d8 (64.0 KiB) [3]
c7 (4.00 MiB)
sector map
region (in hex) | erase mask | overlaid
----------------[ 80.211413] random: crng init done
--+------------+---------
00000000-003fffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003fffff | unlocked | 64
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
0671ee5d1726aa6047aebf939f3b2e776deb8e0bd885c51e77a8f595814bcfb3 spi_read
0671ee5d1726aa6047aebf939f3b2e776deb8e0bd885c51e77a8f595814bcfb3 spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
0671ee5d1726aa6047aebf939f3b2e776deb8e0bd885c51e77a8f595814bcfb3 spi_test
+ mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NANDFLASH
mtd.size = 4194304 (4M)
mtd.erasesize = 65536 (64K)
mtd.writesize = 16
mtd.oobsize = 0
regions = 0
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x400000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
0671ee5d1726aa6047aebf939f3b2e776deb8e0bd885c51e77a8f595814bcfb3 spi_read
0671ee5d1726aa6047aebf939f3b2e776deb8e0bd885c51e77a8f595814bcfb3 spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003fffff | unlocked | 64
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x400000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
0671ee5d1726aa6047aebf939f3b2e776deb8e0bd885c51e77a8f595814bcfb3 spi_read
0671ee5d1726aa6047aebf939f3b2e776deb8e0bd885c51e77a8f595814bcfb3 spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
0671ee5d1726aa6047aebf939f3b2e776deb8e0bd885c51e77a8f595814bcfb3 spi_read
0671ee5d1726aa6047aebf939f3b2e776deb8e0bd885c51e77a8f595814bcfb3 spi_read2
0671ee5d1726aa6047aebf939f3b2e776deb8e0bd885c51e77a8f595814bcfb3 spi_test
a8868ca46a2af0674110d0fa3ba18602d3538f475a3287ebe26cf0d58ecbc6e6 spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003fffff | locked | 64
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=4194304
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=64
+ ss=65536
+ bps=1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 4063232 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003dffff | unlocked | 62
003e0000-003fffff | locked | 2
+ flash_lock -u /dev/mtd0 4063232 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003effff | unlocked | 63
003f0000-003fffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | locked | 2
00020000-003fffff | unlocked | 62
+ flash_lock -u /dev/mtd0 65536 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0000ffff | locked | 1
00010000-003fffff | unlocked | 63
+ all_but_one=63
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 65536 63
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0000ffff | unlocked | 1
00010000-003fffff | locked | 63
+ flash_lock -u /dev/mtd0 65536 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | unlocked | 2
00020000-003fffff | locked | 62
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 63
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003effff | locked | 63
003f0000-003fffff | unlocked | 1
+ flash_lock -u /dev/mtd0 4063232 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-003dffff | locked | 62
003e0000-003fffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 0c5c195ad472..ebc630d9ec6e 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -467,7 +467,7 @@ static const struct flash_info winbond_nor_parts[] = {
.size = SZ_64M,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
- /* W25Q32JW-M */
+ /* W25Q32JW-M, W25Q33PW-M */
.id = SNOR_ID(0xef, 0x80, 0x16),
.name = "w25q32jwm",
.size = SZ_4M,
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 23/25] mtd: spi-nor: winbond: Add support for W25Q64PW-M
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (17 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 22/25] mtd: spi-nor: winbond: Add support for W25Q33PW-M Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 24/25] mtd: spi-nor: winbond: Add support for W25Q12PW-M Miquel Raynal
` (2 subsequent siblings)
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
There is an ID collision with chips of same density from the JW family
(which it self conflicted with yet another family). Chips are very
similar in practice, it is mostly a matter of electrical differences
(mostly power consumption being lower) as well as the addition of inline
ECC capability.
16 bytes chunks are protected against single errors. In case a
non-aligned write happens, ECC is locally disabled until the next erase.
Another significant difference is that PW chips identify themselves as
supporting the new SFDP (rev F) QER field which forces an alternate
write SR2 opcode (0x31).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef8017
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
534644500a0100ff00080117800000ffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520f9ffffffff0344eb086b083b42bbfeffffffffff
0000ffff44eb0c200f5210d80000142a010186e114c1e96376337a757a75
f7a2d55c39f66dffe930f880000000000000ac0000000000f7f5ffff0f00
0000060d44bd27ed080d
+ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
94b52d6e903a2046e144eab0760384b6932c6fdbfec17eb7336f1778c3898daf /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x03
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3b
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbb
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6b
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
Supported page program modes by the flash
1S-1S-1S
opcode 0x02
1S-1S-4S
opcode 0x32
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 80 17 00 00 00
size 8.00 MiB
write size 16
page size 256
address nbytes 3
flags HAS_SR_TB | HAS_LOCK | SOFT_RESET | ECC | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xeb
dummy cycles 6
erase 0xd8
program 0x32
8D extension repeat
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
20 (4.00 KiB) [1]
52 (32.0 KiB) [2]
d8 (64.0 KiB) [3]
c7 (8.00 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+---------
00000000-007fffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | unlocked | 64
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 37.385731] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 40.826253] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
5d849ed7c9837b24510fe6b6b6b5bec59b67f70680c30da58c29fa35c435a846 spi_read
5d849ed7c9837b24510fe6b6b6b5bec59b67f70680c30da58c29fa35c435a846 spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 45.590686] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
5d849ed7c9837b24510fe6b6b6b5bec59b67f70680c30da58c29fa35c435a846 spi_test
+ mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NANDFLASH
mtd.size = 8388608 (8M)
mtd.erasesize = 65536 (64K)
mtd.writesize = 16
mtd.oobsize = 0
regions = 0
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x800000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 49.709879] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
5d849ed7c9837b24510fe6b6b6b5bec59b67f70680c30da58c29fa35c435a846 spi_read
5d849ed7c9837b24510fe6b6b6b5bec59b67f70680c30da58c29fa35c435a846 spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | unlocked | 64
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x800000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 51.379933] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
5d849ed7c9837b24510fe6b6b6b5bec59b67f70680c30da58c29fa35c435a846 spi_read
5d849ed7c9837b24510fe6b6b6b5bec59b67f70680c30da58c29fa35c435a846 spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
[ 53.817562] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
5d849ed7c9837b24510fe6b6b6b5bec59b67f70680c30da58c29fa35c435a846 spi_read
5d849ed7c9837b24510fe6b6b6b5bec59b67f70680c30da58c29fa35c435a846 spi_read2
5d849ed7c9837b24510fe6b6b6b5bec59b67f70680c30da58c29fa35c435a846 spi_test
1e0e0886fe7f4451f72d439efde8fd4a608eb16506f15af4644a30d7c0e82195 spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007fffff | locked | 64
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=8388608
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=64
+ ss=131072
+ bps=2
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 8126464 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007bffff | unlocked | 62
007c0000-007fffff | locked | 2
+ flash_lock -u /dev/mtd0 8126464 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007dffff | unlocked | 63
007e0000-007fffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | locked | 2
00040000-007fffff | unlocked | 62
+ flash_lock -u /dev/mtd0 131072 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | locked | 1
00020000-007fffff | unlocked | 63
+ all_but_one=126
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 131072 126
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | unlocked | 1
00020000-007fffff | locked | 63
+ flash_lock -u /dev/mtd0 131072 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | unlocked | 2
00040000-007fffff | locked | 62
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 126
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007dffff | locked | 63
007e0000-007fffff | unlocked | 1
+ flash_lock -u /dev/mtd0 8126464 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-007bffff | locked | 62
007c0000-007fffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index ebc630d9ec6e..0cfde726ed75 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -475,7 +475,7 @@ static const struct flash_info winbond_nor_parts[] = {
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
}, {
- /* W25Q64JW-M */
+ /* W25Q64JW-M, W25Q64PW-M */
.id = SNOR_ID(0xef, 0x80, 0x17),
.name = "w25q64jwm",
.size = SZ_8M,
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 24/25] mtd: spi-nor: winbond: Add support for W25Q12PW-M
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (18 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 23/25] mtd: spi-nor: winbond: Add support for W25Q64PW-M Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-09 15:25 ` [PATCH 25/25] mtd: spi-nor: winbond: Add support for W25Q25PW-M Miquel Raynal
2026-09-18 11:29 ` [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Michael Walle
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
There is an ID collision with chips of same density from the JW family
(which it self conflicted with yet another family). Chips are very
similar in practice, it is mostly a matter of electrical differences
(mostly power consumption being lower) as well as the addition of inline
ECC capability.
16 bytes chunks are protected against single errors. In case a
non-aligned write happens, ECC is locally disabled until the next erase.
Another significant difference is that PW chips identify themselves as
supporting the new SFDP (rev F) QER field which forces an alternate
write SR2 opcode (0x31).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef8018
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
534644500a0100ff00080117800000ffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520f9ffffffff0744eb086b083b42bbfeffffffffff
0000ffff44eb0c200f5210d80000162a010186e114c2e96376337a757a75
f7a2d55c39f66dffe930f8800000000000002c0000000000f6f4ffff0f00
0000060d44bd27ed080d
+ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
c75ed992ea0351bcecb90f163e1e1c60134b42329bd5d243fb3b8b7fccc5f191 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x03
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3b
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbb
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6b
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xeb
mode cycles 2
dummy cycles 4
Supported page program modes by the flash
1S-1S-1S
opcode 0x02
1S-1S-4S
opcode 0x32
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 80 18 00 00 00
size 16.0 MiB
write size 16
page size 256
address nbytes 3
flags HAS_SR_TB | HAS_LOCK | SOFT_RESET | ECC | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xeb
dummy cycles 6
erase 0xd8
program 0x32
8D extension repeat
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
20 (4.00 KiB) [1]
52 (32.0 KiB) [2]
d8 (64.0 KiB) [3]
c7 (16.0 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+---------
00000000-00ffffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | unlocked | 64
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
[ 12.302899] random: crng init done
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 15.598693] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 18.978675] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
93cc0d279e6b70748274c433d54ab6f0b27b0a5d284d3f5b0304c851aec9b18c spi_read
93cc0d279e6b70748274c433d54ab6f0b27b0a5d284d3f5b0304c851aec9b18c spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 24.039820] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
93cc0d279e6b70748274c433d54ab6f0b27b0a5d284d3f5b0304c851aec9b18c spi_test
+ mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NANDFLASH
mtd.size = 16777216 (16M)
mtd.erasesize = 65536 (64K)
mtd.writesize = 16
mtd.oobsize = 0
regions = 0
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x1000000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 28.091333] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
93cc0d279e6b70748274c433d54ab6f0b27b0a5d284d3f5b0304c851aec9b18c spi_read
93cc0d279e6b70748274c433d54ab6f0b27b0a5d284d3f5b0304c851aec9b18c spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | unlocked | 64
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x1000000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 29.760841] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
93cc0d279e6b70748274c433d54ab6f0b27b0a5d284d3f5b0304c851aec9b18c spi_read
93cc0d279e6b70748274c433d54ab6f0b27b0a5d284d3f5b0304c851aec9b18c spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
[ 32.197530] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
93cc0d279e6b70748274c433d54ab6f0b27b0a5d284d3f5b0304c851aec9b18c spi_read
93cc0d279e6b70748274c433d54ab6f0b27b0a5d284d3f5b0304c851aec9b18c spi_read2
93cc0d279e6b70748274c433d54ab6f0b27b0a5d284d3f5b0304c851aec9b18c spi_test
bf4144b44ed85988564abb12c69edb49a1c5558909d1bd10db9c943f21e87eca spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00ffffff | locked | 64
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=16777216
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=64
+ ss=262144
+ bps=4
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 16252928 8
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00f7ffff | unlocked | 62
00f80000-00ffffff | locked | 2
+ flash_lock -u /dev/mtd0 16252928 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00fbffff | unlocked | 63
00fc0000-00ffffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 8
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0007ffff | locked | 2
00080000-00ffffff | unlocked | 62
+ flash_lock -u /dev/mtd0 262144 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | locked | 1
00040000-00ffffff | unlocked | 63
+ all_but_one=252
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 262144 252
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0003ffff | unlocked | 1
00040000-00ffffff | locked | 63
+ flash_lock -u /dev/mtd0 262144 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0007ffff | unlocked | 2
00080000-00ffffff | locked | 62
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 252
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00fbffff | locked | 63
00fc0000-00ffffff | unlocked | 1
+ flash_lock -u /dev/mtd0 16252928 4
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-00f7ffff | locked | 62
00f80000-00ffffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 0cfde726ed75..ec3309ead1c6 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -482,7 +482,7 @@ static const struct flash_info winbond_nor_parts[] = {
.flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
- /* W25Q128JW-M */
+ /* W25Q128JW-M, W25Q12PW-M */
.id = SNOR_ID(0xef, 0x80, 0x18),
.name = "w25q128jwm",
.size = SZ_16M,
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [PATCH 25/25] mtd: spi-nor: winbond: Add support for W25Q25PW-M
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (19 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 24/25] mtd: spi-nor: winbond: Add support for W25Q12PW-M Miquel Raynal
@ 2026-09-09 15:25 ` Miquel Raynal
2026-09-18 11:29 ` [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Michael Walle
21 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-09 15:25 UTC (permalink / raw)
To: Pratyush Yadav, Michael Walle, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel, Miquel Raynal
There is an ID collision with chips of same density from the JW family
(which it self conflicted with yet another family). Chips are very
similar in practice, it is mostly a matter of electrical differences
(mostly power consumption being lower) as well as the addition of inline
ECC capability.
16 bytes chunks are protected against single errors. In case a
non-aligned write happens, ECC is locally disabled until the next erase.
Another significant difference is that PW chips identify themselves as
supporting the new SFDP (rev F) QER field which forces an alternate
write SR2 opcode (0x31).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef8019
+ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
+ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
534644500a0101ff00080117800000ff84010102e00000ffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffe520fbffffffff0f44eb086b083b42bbfeffffffffff
0000ffff44eb0c200f5210d80000142a010186e114c4e96376337a757a75
f7a4d55c39f66dffe970f9a50000000000002c0000000000f7f5ffff0f00
0000060d44bd27ed080dffffffffff8a00fe21ffdcff
+ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
3361f4e84529b23aacc3cc1d41bcb36b2c3a0e42be019d71b586c952e03e6098 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
+ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x13
mode cycles 0
dummy cycles 0
1S-1S-2S
opcode 0x3c
mode cycles 0
dummy cycles 8
1S-2S-2S
opcode 0xbc
mode cycles 2
dummy cycles 2
1S-1S-4S
opcode 0x6c
mode cycles 0
dummy cycles 8
1S-4S-4S
opcode 0xec
mode cycles 2
dummy cycles 4
4S-4S-4S
opcode 0xec
mode cycles 2
dummy cycles 4
Supported page program modes by the flash
1S-1S-1S
opcode 0x12
1S-1S-4S
opcode 0x34
+ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 80 19 00 00 00
size 32.0 MiB
write size 16
page size 256
address nbytes 4
flags HAS_SR_TB | 4B_OPCODES | HAS_4BAIT | HAS_LOCK | HAS_SR_TB_BIT6 | HAS_4BIT_BP | SOFT_RESET | ECC | NO_WP | HAS_SR2_CMP_BIT6
opcodes
read 0xec
dummy cycles 6
erase 0xdc
program 0x34
8D extension repeat
protocols
read 1S-4S-4S
write 1S-1S-4S
register 1S-1S-1S
erase commands
21 (4.00 KiB) [1]
dc (64.0 KiB) [3]
c7 (32.0 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+---------
00000000-01ffffff | [ 3] | no
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01ffffff | unlocked | 512
+ dd 'if=/dev/urandom' 'of=./spi_test' 'bs=1M' 'count=2'
[ 7.216017] random: crng init done
2+0 records in
2+0 records out
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 9.225266] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
+ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 12.783730] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
51acf03d440fea3017e99b0dfd9711173044c57be0e2699221e969b6c02a2133 spi_read
51acf03d440fea3017e99b0dfd9711173044c57be0e2699221e969b6c02a2133 spi_test
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 17.878349] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
51acf03d440fea3017e99b0dfd9711173044c57be0e2699221e969b6c02a2133 spi_test
+ mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NANDFLASH
mtd.size = 33554432 (32M)
mtd.erasesize = 65536 (64K)
mtd.writesize = 16
mtd.oobsize = 0
regions = 0
+ alias 'show_sectors=grep -A4 "locked sectors" /sys/kernel/debug/spi-nor/spi0.0/params'
+ flash_lock -u /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x2000000
Lock status: unlocked
Return code: 0
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug write /dev/mtd0 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 22.062778] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
51acf03d440fea3017e99b0dfd9711173044c57be0e2699221e969b6c02a2133 spi_read
51acf03d440fea3017e99b0dfd9711173044c57be0e2699221e969b6c02a2133 spi_test
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01ffffff | unlocked | 512
+ flash_lock -l /dev/mtd0
+ flash_lock -i /dev/mtd0
Device: /dev/mtd0
Start: 0
Len: 0x2000000
Lock status: locked
Return code: 1
+ mtd_debug erase /dev/mtd0 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read
[ 23.733210] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
+ sha256sum spi_read spi_test
51acf03d440fea3017e99b0dfd9711173044c57be0e2699221e969b6c02a2133 spi_read
51acf03d440fea3017e99b0dfd9711173044c57be0e2699221e969b6c02a2133 spi_test
+ dd 'if=/dev/urandom' 'of=./spi_test2' 'bs=1M' 'count=2'
2+0 records in
2+0 records out
+ mtd_debug write /dev/mtd0 0 2097152 spi_test2
Copied 2097152 bytes from spi_test2 to address 0x00000000 in flash
+ mtd_debug read /dev/mtd0 0 2097152 spi_read2
[ 26.172756] spi_nor_read [1882] [ret: 0] SR3 0x4 @ offset 0x0
Copied 2097152 bytes from address 0x00000000 in flash to spi_read2
+ sha256sum spi_read spi_read2 spi_test spi_test2
51acf03d440fea3017e99b0dfd9711173044c57be0e2699221e969b6c02a2133 spi_read
51acf03d440fea3017e99b0dfd9711173044c57be0e2699221e969b6c02a2133 spi_read2
51acf03d440fea3017e99b0dfd9711173044c57be0e2699221e969b6c02a2133 spi_test
c17d6a0ddfc0f437e7729e42b91b5bd776f2eff4634a7f55c2e88e0774e43ab7 spi_test2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01ffffff | locked | 512
+ flash_lock -u /dev/mtd0
+ cat /sys/class/mtd/mtd0/size
+ size=33554432
+ cat /sys/class/mtd/mtd0/erasesize
+ bs=65536
+ grep unlocked /sys/kernel/debug/spi-nor/spi0.0/params
+ sed -e 's/.*unlocked | //'
+ nsectors=512
+ ss=65536
+ bps=1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 33423360 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01fdffff | unlocked | 510
01fe0000-01ffffff | locked | 2
+ flash_lock -u /dev/mtd0 33423360 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01feffff | unlocked | 511
01ff0000-01ffffff | locked | 1
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 25165824 128
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-017fffff | unlocked | 384
01800000-01ffffff | locked | 128
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 2
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | locked | 2
00020000-01ffffff | unlocked | 510
+ flash_lock -u /dev/mtd0 65536 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0000ffff | locked | 1
00010000-01ffffff | unlocked | 511
+ all_but_one=511
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 65536 511
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0000ffff | unlocked | 1
00010000-01ffffff | locked | 511
+ flash_lock -u /dev/mtd0 65536 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-0001ffff | unlocked | 2
00020000-01ffffff | locked | 510
+ flash_lock -u /dev/mtd0
+ flash_lock -l /dev/mtd0 0 511
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01feffff | locked | 511
01ff0000-01ffffff | unlocked | 1
+ flash_lock -u /dev/mtd0 33423360 1
+ grep -A4 'locked sectors' /sys/kernel/debug/spi-nor/spi0.0/params
locked sectors
region (in hex) | status | #sectors
------------------+----------+---------
00000000-01fdffff | locked | 510
01fe0000-01ffffff | unlocked | 2
---
drivers/mtd/spi-nor/winbond.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index ec3309ead1c6..f2daab39ea57 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -489,7 +489,7 @@ static const struct flash_info winbond_nor_parts[] = {
.flags = SPI_NOR_QUAD_PP | SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_HAS_CMP,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
- /* W25Q256JW-M */
+ /* W25Q256JW-M, W25Q25PW-M */
.id = SNOR_ID(0xef, 0x80, 0x19),
.name = "w25q256jwm",
.size = SZ_32M,
--
2.54.0
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips
2026-09-09 15:25 [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Miquel Raynal
` (20 preceding siblings ...)
2026-09-09 15:25 ` [PATCH 25/25] mtd: spi-nor: winbond: Add support for W25Q25PW-M Miquel Raynal
@ 2026-09-18 11:29 ` Michael Walle
2026-09-18 13:32 ` Miquel Raynal
21 siblings, 1 reply; 26+ messages in thread
From: Michael Walle @ 2026-09-18 11:29 UTC (permalink / raw)
To: Miquel Raynal, Pratyush Yadav, Takahiro Kuwano,
Richard Weinberger, Vignesh Raghavendra
Cc: Thomas Petazzoni, Steam Lin, linux-mtd, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 2690 bytes --]
On Wed Sep 9, 2026 at 5:25 PM CEST, Miquel Raynal wrote:
> Compared to the previous ones, this series is super straightforward
> since it leverages all the core changes that have already been done for
> the JV/RV families. Like the former JV/RV series, it first cleans up the
> table for JW chips. As I have access to a lot of devices, I made test
> runs with almost all of them. This way I could extract the SFDP data,
> the capabilities of the chips, proof that they passed all the tests,
> etc. I then add support for the PW parts, also showing a full test run
> in each case.
>
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
> Miquel Raynal (25):
> mtd: spi-nor: winbond: W25Q32xW-Q/N: Enhance identification of the chips
> mtd: spi-nor: winbond: W25Q64xW-Q/N: Enhance identification of the chips
> mtd: spi-nor: winbond: W25Q32xW-Q/N: Fill locking information
> mtd: spi-nor: winbond: W25Q64xW-Q/N: Fill locking information
> mtd: spi-nor: winbond: W25Q128JW-Q/N: Fill locking information
> mtd: spi-nor: winbond: W25Q32JW-M: Fill locking information
> mtd: spi-nor: winbond: W25Q64JW-M: Fill locking information
> mtd: spi-nor: winbond: W25Q128JW-M: Fill locking information
> mtd: spi-nor: winbond: W25Q256JW-Q/N/M: Fill locking information
> mtd: spi-nor: winbond: W25Q32JW-Q/N: Add quad page program capability
> mtd: spi-nor: winbond: W25Q64JW-Q/N: Add quad page program capability
> mtd: spi-nor: winbond: W25Q128JW-Q/N: Add quad page program capability
> mtd: spi-nor: winbond: W25Q32JW-M: Add quad page program capability
> mtd: spi-nor: winbond: W25Q64JW-M: Add quad page program capability
> mtd: spi-nor: winbond: W25Q128JW-M: Add quad page program capability
> mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-Q/N parts
> mtd: spi-nor: winbond: Add support for W25Q33PW-Q/N
> mtd: spi-nor: winbond: Add support for W25Q64PW-Q/N
> mtd: spi-nor: winbond: Add support for W25Q12PW-Q/N
> mtd: spi-nor: winbond: Add support for W25Q25PW-Q/N
> mtd: spi-nor: winbond: Prepare introduction of W25QxxPW-M parts
> mtd: spi-nor: winbond: Add support for W25Q33PW-M
> mtd: spi-nor: winbond: Add support for W25Q64PW-M
> mtd: spi-nor: winbond: Add support for W25Q12PW-M
> mtd: spi-nor: winbond: Add support for W25Q25PW-M
I've just noticed, that neither lore nor my mail server received all
your mails and there are missing patches.
Could you please send a new v2?
That also means, I've haven't been able to review patches 2, 5, 14,
15, 17, 22, 23.
-michael
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 297 bytes --]
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips
2026-09-18 11:29 ` [PATCH 00/25] mtd: spi-nor: winbond: Cleanup JW family, add support for PW chips Michael Walle
@ 2026-09-18 13:32 ` Miquel Raynal
0 siblings, 0 replies; 26+ messages in thread
From: Miquel Raynal @ 2026-09-18 13:32 UTC (permalink / raw)
To: Michael Walle
Cc: Pratyush Yadav, Takahiro Kuwano, Richard Weinberger,
Vignesh Raghavendra, Thomas Petazzoni, Steam Lin, linux-mtd,
linux-kernel
> I've just noticed, that neither lore nor my mail server received all
> your mails and there are missing patches.
>
> Could you please send a new v2?
>
> That also means, I've haven't been able to review patches 2, 5, 14,
> 15, 17, 22, 23.
Ah, yes, we've had quota issues recently. These have been (normally)
fixed now. Certain recipients have received everything, but not all. I
will respin a v2 with the comment fixed.
Thanks,
Miquèl
^ permalink raw reply [flat|nested] 26+ messages in thread