From: Miquel Raynal <miquel.raynal@bootlin.com>
To: "Michael Walle" <mwalle@kernel.org>
Cc: "Pratyush Yadav" <pratyush@kernel.org>,
"Takahiro Kuwano" <takahiro.kuwano@infineon.com>,
"Richard Weinberger" <richard@nod.at>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
"Steam Lin" <STLin2@winbond.com>,
<linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 02/30] mtd: spi-nor: winbond: Normalize names
Date: Wed, 22 Jul 2026 14:52:19 +0200 [thread overview]
Message-ID: <878q73jif0.fsf@bootlin.com> (raw)
In-Reply-To: <DJRJH8H54BBB.9ZNM5OJBFG47@kernel.org> (Michael Walle's message of "Mon, 06 Jul 2026 15:57:10 +0200")
Hello Michael,
>> As a result, W25Q01NWxxIQ is irrelevant and would better be named
>> W25Q01NW-Q, W25Q02JV is irrelevant and would better be named W25Q02JV-M,
>> etc.
>
> OTOH if you try to search for that name on the internet/datasheets
> you don't find anything, while the xx somehow indicates that
> something is missing here.
The datasheet is often the same for N/Q/M variants, a table close to the
end mentions the differences. The intermediate letters have no useful
meaning for us and IIRC they number may vary. The meanging is:
- W: Winbond
- 25Q: SPI NOR family
- 02J: Density
- V: Voltage level
- Useless information for software support such as the package
size or some ratings which have no impact on the software, the
absence of lead, etc.
- And then there are subtleties such as features available or
not, enabled by default or not, which can be disabled or not,
that is carried by the last letter.
Thanks,
Miquèl
next prev parent reply other threads:[~2026-07-22 12:52 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-29 15:22 [PATCH 00/30] mtd: spi-nor: Clean Winbond W25QxxJV family Miquel Raynal
2026-05-29 15:22 ` [PATCH 01/30] mtd: spi-nor: winbond: Move W25Q01NW to its right place Miquel Raynal
2026-07-06 13:54 ` Michael Walle
2026-05-29 15:22 ` [PATCH 02/30] mtd: spi-nor: winbond: Normalize names Miquel Raynal
2026-07-06 13:57 ` Michael Walle
2026-07-22 12:52 ` Miquel Raynal [this message]
2026-07-22 13:07 ` Michael Walle
2026-07-22 15:19 ` Miquel Raynal
2026-05-29 15:22 ` [PATCH 03/30] mtd: spi-nor: winbond: Stop filling the .name entry Miquel Raynal
2026-07-06 13:59 ` Michael Walle
2026-07-22 12:56 ` Miquel Raynal
2026-07-22 13:23 ` Michael Walle
2026-07-22 15:51 ` Miquel Raynal
2026-08-06 9:47 ` Miquel Raynal
2026-05-29 15:22 ` [PATCH 04/30] mtd: spi-nor: winbond: Make the RDCR fixup Winbond wide Miquel Raynal
2026-07-06 14:11 ` Michael Walle
2026-07-31 9:38 ` Miquel Raynal
2026-05-29 15:22 ` [PATCH 05/30] mtd: spi-nor: winbond: W25Q32JV-Q/N: Drop redundant data Miquel Raynal
2026-07-06 14:13 ` Michael Walle
2026-07-22 13:00 ` Miquel Raynal
2026-05-29 15:22 ` [PATCH 06/30] mtd: spi-nor: winbond: W25Q64JV-Q/N: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 07/30] mtd: spi-nor: winbond: W25Q512JV-Q/N: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 08/30] mtd: spi-nor: winbond: W25Q32JV-Q/N: Add quad page program capability Miquel Raynal
2026-07-06 14:16 ` Michael Walle
2026-07-22 13:01 ` Miquel Raynal
2026-05-29 15:22 ` [PATCH 09/30] mtd: spi-nor: winbond: W25Q64JV-Q/N: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 10/30] mtd: spi-nor: winbond: W25Q128JV-Q/N: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 11/30] mtd: spi-nor: winbond: W25Q32JV-Q/N: Fill locking information Miquel Raynal
2026-07-06 14:21 ` Michael Walle
2026-07-22 15:00 ` Miquel Raynal
2026-05-29 15:22 ` [PATCH 12/30] mtd: spi-nor: winbond: W25Q64JV-Q/N: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 13/30] mtd: spi-nor: winbond: W25Q128JV-Q/N: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 14/30] mtd: spi-nor: winbond: W25Q512JV-Q/N: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 15/30] mtd: spi-nor: winbond: W25Q01JV-Q/N: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 16/30] mtd: spi-nor: winbond: W25Q32JV-M: Drop redundant data Miquel Raynal
2026-07-06 14:23 ` Michael Walle
2026-07-22 15:09 ` Miquel Raynal
2026-05-29 15:22 ` [PATCH 17/30] mtd: spi-nor: winbond: W25Q64JV-M: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 18/30] mtd: spi-nor: winbond: W25Q128JV-M: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 19/30] mtd: spi-nor: winbond: W25Q32JV-M: Add quad page program capability Miquel Raynal
2026-05-29 15:22 ` [PATCH 20/30] mtd: spi-nor: winbond: W25Q64JV-M: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 21/30] mtd: spi-nor: winbond: W25Q128JV-M: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 22/30] mtd: spi-nor: winbond: W25Q32JV-M: Fill locking information Miquel Raynal
2026-05-29 15:22 ` [PATCH 23/30] mtd: spi-nor: winbond: W25Q64JV-M: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 24/30] mtd: spi-nor: winbond: W25Q128JV-M: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 25/30] mtd: spi-nor: winbond: W25Q02JV-M: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 26/30] mtd: spi-nor: winbond: W25Q512JV-M: New chip Miquel Raynal
2026-05-29 15:22 ` [PATCH 27/30] mtd: spi-nor: winbond: W25Q01JV-M: " Miquel Raynal
2026-05-29 15:22 ` [PATCH 28/30] mtd: spi-nor: winbond: W25QxxJV-Q/N/M: Drop redundant data Miquel Raynal
2026-05-29 15:22 ` [PATCH 29/30] mtd: spi-nor: winbond: W25QxxJV-Q/N/M: Add quad page program capability Miquel Raynal
2026-05-29 15:22 ` [PATCH 30/30] mtd: spi-nor: winbond: W25QxxJV-Q/N/M: Fill locking information Miquel Raynal
2026-07-06 14:27 ` [PATCH 00/30] mtd: spi-nor: Clean Winbond W25QxxJV family Michael Walle
2026-07-22 12:45 ` Miquel Raynal
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