linux-kernel - Re: [PATCH v3 7/7] arm64: dts: qcom: sm8250: correct frequencies in the Iris OPP table

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Message-ID: <f3706cd8-f3e9-4ca1-790e-a8555bd1e976@oss.qualcomm.com>
Date: Thu, 5 Feb 2026 12:29:13 +0530
From: Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd
 <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Taniya Das <quic_tdas@...cinc.com>, Jonathan Marek <jonathan@...ek.ca>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Bryan O'Donoghue <bod@...nel.org>,
        Vikash Garodia <vikash.garodia@....qualcomm.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Hans Verkuil <hverkuil@...nel.org>,
        Stefan Schmidt <stefan.schmidt@...aro.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Dikshita Agarwal <dikshita@....qualcomm.com>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-media@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: Re: [PATCH v3 7/7] arm64: dts: qcom: sm8250: correct frequencies in
 the Iris OPP table



On 2/4/2026 6:29 AM, Dmitry Baryshkov wrote:
> The OPP table for the Iris core is wrong, it copies the VDD table from
> the downstream kernel, but that table is written for the
> video_cc_mvs0_clk_src, while the upstream uses video_cc_mvs0_clk for OPP
> rate setting (which is clk_src divided by 3). Specify correct
> frequencies in the OPP table.
> 
> Fixes: fa245b3f06cd ("arm64: dts: qcom: sm8250: Add venus DT node")
> Reported-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/sm8250.dtsi | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> index d8be5c1add1b..7d11f1a28546 100644
> --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> @@ -4350,26 +4350,26 @@ venus: video-codec@...0000 {
>  			venus_opp_table: opp-table {
>  				compatible = "operating-points-v2";
>  
> -				opp-720000000 {
> -					opp-hz = /bits/ 64 <720000000>;
> +				opp-240000000 {
> +					opp-hz = /bits/ 64 <240000000>;
>  					required-opps = <&rpmhpd_opp_svs>,
>  							<&rpmhpd_opp_low_svs>;
>  				};
>  
> -				opp-1014000000 {
> -					opp-hz = /bits/ 64 <1014000000>;
> +				opp-338000000 {
> +					opp-hz = /bits/ 64 <338000000>;
>  					required-opps = <&rpmhpd_opp_svs>,
>  							<&rpmhpd_opp_svs>;
>  				};
>  
> -				opp-1098000000 {
> -					opp-hz = /bits/ 64 <1098000000>;
> +				opp-366000000 {
> +					opp-hz = /bits/ 64 <366000000>;
>  					required-opps = <&rpmhpd_opp_svs_l1>,
>  							<&rpmhpd_opp_svs_l1>;
>  				};
>  
> -				opp-1332000000 {
> -					opp-hz = /bits/ 64 <1332000000>;
> +				opp-444000000 {
> +					opp-hz = /bits/ 64 <444000000>;
>  					required-opps = <&rpmhpd_opp_svs_l1>,
>  							<&rpmhpd_opp_nom>;
>  				};
> 

Reviewed-by: Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>

Thanks,
Dikshita