From: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
To: Loic Poulain <loic.poulain@oss.qualcomm.com>,
Robert Foss <rfoss@kernel.org>,
Andi Shyti <andi.shyti@kernel.org>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
Luca Weiss <luca@lucaweiss.eu>
Cc: linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] i2c: qcom-cci: Add missing cci_clk_rate for msm8953
Date: Sat, 25 Jul 2026 09:42:11 +0300 [thread overview]
Message-ID: <b0bfb2a9-6918-49b7-a28e-c0c822c6f957@linaro.org> (raw)
In-Reply-To: <20260721-cci-clk-fix-v1-2-5eae78700da8@oss.qualcomm.com>
On 7/21/26 17:58, Loic Poulain wrote:
> The msm8953 CCI data was added after cci_clk_rate was removed from the
> driver, so it never got a clock rate entry. The DT assigns 19.2 MHz to
> GCC_CAMSS_CCI_CLK and the hw_params values match those of v1/v1.5 which
> were also calibrated for 19.2 MHz.
>
> Fixes: d202341d9b0c ("i2c: qcom-cci: Add msm8953 compatible")
By the way this commit also does not fix anything, moreover its backport
won't solve any bugs, but may break the build, if 1/3 is not applied.
I'd ask to consider to remove the Fixes tag here.
> Signed-off-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
> ---
> drivers/i2c/busses/i2c-qcom-cci.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/i2c/busses/i2c-qcom-cci.c b/drivers/i2c/busses/i2c-qcom-cci.c
> index 19e4719f13b29b2cf60e113565b1b63f19d0e669..5f74edde8558382e63e2c3d0fbe19489f325e8ce 100644
> --- a/drivers/i2c/busses/i2c-qcom-cci.c
> +++ b/drivers/i2c/busses/i2c-qcom-cci.c
> @@ -783,6 +783,7 @@ static const struct cci_data cci_msm8953_data = {
> .max_write_len = 11,
> .max_read_len = 12,
> },
> + .cci_clk_rate = 19200000,
> .params[I2C_MODE_STANDARD] = {
> .thigh = 78,
> .tlow = 114,
>
--
Best wishes,
Vladimir
next prev parent reply other threads:[~2026-07-25 6:42 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-21 14:58 [PATCH 0/3] i2c: qcom-cci: Fix CCI clock rate enforcement Loic Poulain
2026-07-21 14:58 ` [PATCH 1/3] Revert "i2c: qcom-cci: Remove unused struct member cci_clk_rate" Loic Poulain
2026-07-24 22:57 ` Andi Shyti
2026-07-25 5:41 ` Vladimir Zapolskiy
2026-07-25 8:40 ` Vladimir Zapolskiy
2026-07-26 15:08 ` Andi Shyti
2026-07-21 14:58 ` [PATCH 2/3] i2c: qcom-cci: Add missing cci_clk_rate for msm8953 Loic Poulain
2026-07-25 6:42 ` Vladimir Zapolskiy [this message]
2026-07-25 8:36 ` Vladimir Zapolskiy
2026-07-25 13:06 ` Loic Poulain
2026-07-25 14:19 ` Vladimir Zapolskiy
2026-07-21 14:58 ` [PATCH 3/3] i2c: qcom-cci: Fix CCI clock rate enforcement Loic Poulain
2026-07-21 15:07 ` Konrad Dybcio
2026-07-21 15:41 ` Loic Poulain
2026-07-21 17:01 ` Konrad Dybcio
2026-07-23 3:04 ` [PATCH 0/3] " Wenmeng Liu
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