From: Arseniy Krasnov <avkrasnov@salutedevices.com>
To: Liang Yang <liang.yang@amlogic.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Neil Armstrong <neil.armstrong@linaro.org>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: <oxffffaa@gmail.com>, <kernel@sberdevices.ru>,
Arseniy Krasnov <avkrasnov@salutedevices.com>,
<linux-mtd@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-amlogic@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH v1] mtd: rawnand: meson: initialize clock register
Date: Thu, 9 Nov 2023 08:40:37 +0300 [thread overview]
Message-ID: <20231109054037.3864802-1-avkrasnov@salutedevices.com> (raw)
Clock register must be also initialized during controller probing. If
this is not performed (for example by bootloader before) - controller
will not work.
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
---
drivers/mtd/nand/raw/meson_nand.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index 0d4d358152d7..4e7fa943928c 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -91,6 +91,8 @@
/* eMMC clock register, misc control */
#define CLK_SELECT_NAND BIT(31)
+#define CLK_ALWAYS_ON_NAND BIT(24)
+#define CLK_ENABLE_VALUE 0x245
#define NFC_CLK_CYCLE 6
@@ -1152,7 +1154,7 @@ static int meson_nfc_clk_init(struct meson_nfc *nfc)
return PTR_ERR(nfc->nand_clk);
/* init SD_EMMC_CLOCK to sane defaults w/min clock rate */
- writel(CLK_SELECT_NAND | readl(nfc->reg_clk),
+ writel(CLK_ALWAYS_ON_NAND | CLK_SELECT_NAND | CLK_ENABLE_VALUE,
nfc->reg_clk);
ret = clk_prepare_enable(nfc->core_clk);
--
2.35.0
_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic
next reply other threads:[~2023-11-09 5:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-09 5:40 Arseniy Krasnov [this message]
2023-11-12 10:08 ` Arseniy Krasnov
2023-11-13 6:47 ` Liang Yang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20231109054037.3864802-1-avkrasnov@salutedevices.com \
--to=avkrasnov@salutedevices.com \
--cc=jbrunet@baylibre.com \
--cc=kernel@sberdevices.ru \
--cc=khilman@baylibre.com \
--cc=liang.yang@amlogic.com \
--cc=linux-amlogic@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mtd@lists.infradead.org \
--cc=martin.blumenstingl@googlemail.com \
--cc=miquel.raynal@bootlin.com \
--cc=neil.armstrong@linaro.org \
--cc=oxffffaa@gmail.com \
--cc=richard@nod.at \
--cc=vigneshr@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®