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

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Date:   Thu, 14 Jul 2022 22:38:22 +0200
From:   Marijn Suijten <marijn.suijten@...ainline.org>
To:     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>,
        Stephen Boyd <sboyd@...nel.org>,
        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: [PATCH] clk: qcom: gcc-sdm660: Use floor ops for SDCC1 clock

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>
---
 drivers/clk/qcom/gcc-sdm660.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/gcc-sdm660.c b/drivers/clk/qcom/gcc-sdm660.c
index 429d12193146..04b427b577a1 100644
--- a/drivers/clk/qcom/gcc-sdm660.c
+++ b/drivers/clk/qcom/gcc-sdm660.c
@@ -743,7 +743,7 @@ static struct clk_rcg2 sdcc1_apps_clk_src = {
 		.name = "sdcc1_apps_clk_src",
 		.parent_data = gcc_parent_data_xo_gpll0_gpll4_gpll0_early_div,
 		.num_parents = ARRAY_SIZE(gcc_parent_data_xo_gpll0_gpll4_gpll0_early_div),
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_floor_ops,
 	},
 };
 
-- 
2.37.1