linux-kernel - Re: [PATCH] clk: qcom: gcc-sdm660: Use floor ops for SDCC1 clock

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Message-Id: <20220728003155.22D28C433D6@smtp.kernel.org>
Date:   Wed, 27 Jul 2022 17:31:53 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Marijn Suijten <marijn.suijten@...ainline.org>,
        phone-devel@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Martin Botka <martin.botka@...ainline.org>,
        Jami Kettunen <jami.kettunen@...ainline.org>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Taniya Das <tdas@...eaurora.org>,
        Rob Herring <robh@...nel.org>,
        Craig Tatlor <ctatlor97@...il.com>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clk: qcom: gcc-sdm660: Use floor ops for SDCC1 clock

Quoting Marijn Suijten (2022-07-14 13:38:22)
> In commit 3f905469c8ce ("clk: qcom: gcc: Use floor ops for SDCC clocks")
> floor ops were applied to SDCC2 only, but flooring is also required on
> the SDCC1 apps clock which is used by the eMMC card on Sony's Nile
> platform, and otherwise result in the typicial "Card appears
> overclocked" warnings observed on many other platforms before:
> 
>     mmc0: Card appears overclocked; req 52000000 Hz, actual 100000000 Hz
>     mmc0: Card appears overclocked; req 52000000 Hz, actual 100000000 Hz
>     mmc0: Card appears overclocked; req 104000000 Hz, actual 192000000 Hz
> 
> Fixes: f2a76a2955c0 ("clk: qcom: Add Global Clock controller (GCC) driver for SDM660")
> Signed-off-by: Marijn Suijten <marijn.suijten@...ainline.org>
> ---

Reviewed-by: Stephen Boyd <sboyd@...nel.org>