From: Patrice CHOTARD <patrice.chotard@foss.st.com>
To: <dillon.minfei@gmail.com>, <pierre-yves.mordret@foss.st.com>,
<alain.volmat@foss.st.com>, <mcoquelin.stm32@gmail.com>,
<alexandre.torgue@foss.st.com>, <sumit.semwal@linaro.org>,
<christian.koenig@amd.com>, <mturquette@baylibre.com>
Cc: sboyd@kernel.org, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org, linux-clk@vger.kernel.org,
linaro-mm-sig@lists.linaro.org, linux-i2c@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org
Subject: Re: [PATCH 3/4] clk: stm32: Fix stm32f429's ltdc driver hang in set clock rate
Date: Tue, 1 Jun 2021 14:48:10 +0200 [thread overview]
Message-ID: <6ecedc1d-3b80-0eba-a5f0-8feb3eae16cf@foss.st.com> (raw)
In-Reply-To: <1620990152-19255-4-git-send-email-dillon.minfei@gmail.com>
Hi Dillon
On 5/14/21 1:02 PM, dillon.minfei@gmail.com wrote:
> From: Dillon Min <dillon.minfei@gmail.com>
>
> This is due to misuse ‘PLL_VCO_SAI' and'PLL_SAI' in clk-stm32f4.c
> 'PLL_SAI' is 2, 'PLL_VCO_SAI' is 7(defined in
> include/dt-bindings/clock/stm32fx-clock.h).
>
> 'post_div' point to 'post_div_data[]', 'post_div->pll_num'
> is PLL_I2S or PLL_SAI.
>
> 'clks[PLL_VCO_SAI]' has valid 'struct clk_hw* ' return
> from stm32f4_rcc_register_pll() but, at line 1777 of
> driver/clk/clk-stm32f4.c, use the 'clks[post_div->pll_num]',
> equal to 'clks[PLL_SAI]', this is invalid array member at that time.
>
> Fixes: 517633ef630e ("clk: stm32f4: Add post divisor for I2S & SAI PLLs")
> Signed-off-by: Dillon Min <dillon.minfei@gmail.com>
> Acked-by: Stephen Boyd <sboyd@kernel.org>
> Link: https://lore.kernel.org/linux-arm-kernel/1590564453-24499-6-git-send-email-dillon.minfei@gmail.com/
> ---
> drivers/clk/clk-stm32f4.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/clk/clk-stm32f4.c b/drivers/clk/clk-stm32f4.c
> index 18117ce5ff85..42ca2dd86aea 100644
> --- a/drivers/clk/clk-stm32f4.c
> +++ b/drivers/clk/clk-stm32f4.c
> @@ -557,13 +557,13 @@ static const struct clk_div_table post_divr_table[] = {
>
> #define MAX_POST_DIV 3
> static const struct stm32f4_pll_post_div_data post_div_data[MAX_POST_DIV] = {
> - { CLK_I2SQ_PDIV, PLL_I2S, "plli2s-q-div", "plli2s-q",
> + { CLK_I2SQ_PDIV, PLL_VCO_I2S, "plli2s-q-div", "plli2s-q",
> CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 0, 5, 0, NULL},
>
> - { CLK_SAIQ_PDIV, PLL_SAI, "pllsai-q-div", "pllsai-q",
> + { CLK_SAIQ_PDIV, PLL_VCO_SAI, "pllsai-q-div", "pllsai-q",
> CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 8, 5, 0, NULL },
>
> - { NO_IDX, PLL_SAI, "pllsai-r-div", "pllsai-r", CLK_SET_RATE_PARENT,
> + { NO_IDX, PLL_VCO_SAI, "pllsai-r-div", "pllsai-r", CLK_SET_RATE_PARENT,
> STM32F4_RCC_DCKCFGR, 16, 2, 0, post_divr_table },
> };
>
>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Thanks
Patrice
next prev parent reply other threads:[~2021-06-01 12:48 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-14 11:02 [PATCH 0/4] Fix the i2c/clk bug of stm32 mcu platform dillon.minfei
2021-05-14 11:02 ` [PATCH 1/4] drm/panel: Add ilitek ili9341 panel driver dillon.minfei
2021-05-31 13:15 ` Patrice CHOTARD
2021-05-31 13:39 ` Dillon Min
2021-06-01 2:31 ` Dillon Min
2021-05-14 11:02 ` [PATCH 2/4] i2c: stm32f4: Fix stmpe811 get xyz data timeout issue dillon.minfei
2021-06-01 11:43 ` Patrice CHOTARD
2021-06-01 11:58 ` Dillon Min
2021-05-14 11:02 ` [PATCH 3/4] clk: stm32: Fix stm32f429's ltdc driver hang in set clock rate dillon.minfei
2021-06-01 12:48 ` Patrice CHOTARD [this message]
2021-05-14 11:02 ` [PATCH 4/4] clk: stm32: Fix ltdc's clock turn off by clk_disable_unused() after kernel startup dillon.minfei
2021-06-01 12:51 ` Patrice CHOTARD
2021-05-28 6:01 ` [PATCH 0/4] Fix the i2c/clk bug of stm32 mcu platform Dillon Min
2021-05-31 13:20 ` Patrice CHOTARD
2021-05-31 13:38 ` Dillon Min
2021-05-31 13:50 ` Patrice CHOTARD
2021-05-31 14:29 ` Dillon Min
2021-05-31 14:58 ` Patrice CHOTARD
2021-06-01 3:28 ` Dillon Min
2021-06-01 8:00 ` Patrice CHOTARD
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=6ecedc1d-3b80-0eba-a5f0-8feb3eae16cf@foss.st.com \
--to=patrice.chotard@foss.st.com \
--cc=alain.volmat@foss.st.com \
--cc=alexandre.torgue@foss.st.com \
--cc=christian.koenig@amd.com \
--cc=dillon.minfei@gmail.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=linaro-mm-sig@lists.linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-clk@vger.kernel.org \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux-stm32@st-md-mailman.stormreply.com \
--cc=mcoquelin.stm32@gmail.com \
--cc=mturquette@baylibre.com \
--cc=pierre-yves.mordret@foss.st.com \
--cc=sboyd@kernel.org \
--cc=sumit.semwal@linaro.org \
/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;
as well as URLs for NNTP newsgroup(s).