linux-kernel - Re: [PATCH v2 3/3] arm64: dts: qcom: sm8550: Add missing RPMhPD OPP levels

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Message-ID: <5db3bc67-9ef2-b97e-0eab-77460bc2b5c0@linaro.org>
Date:   Thu, 18 May 2023 03:41:48 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] arm64: dts: qcom: sm8550: Add missing RPMhPD OPP
 levels

On 17/05/2023 23:12, Konrad Dybcio wrote:
> We need more granularity for things like the GPU. Add the missing levels.
> 
> This unfortunately requires some re-indexing, resulting in an ugly diff.
> Rename the nodes to prevent that in the future.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>   arch/arm64/boot/dts/qcom/sm8550.dtsi | 40 +++++++++++++++++++++++++++---------
>   1 file changed, 30 insertions(+), 10 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
> index 6e9bad8f6f33..1c9460dc3d44 100644
> --- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
> @@ -3608,43 +3608,63 @@ rpmhpd: power-controller {
>   				rpmhpd_opp_table: opp-table {
>   					compatible = "operating-points-v2";
>   
> -					rpmhpd_opp_ret: opp1 {
> +					rpmhpd_opp_ret: opp-16 {
>   						opp-level = <RPMH_REGULATOR_LEVEL_RETENTION>;
>   					};
>   
> -					rpmhpd_opp_min_svs: opp2 {
> +					rpmhpd_opp_min_svs: opp-48 {
>   						opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
>   					};

It might have been better to split this into two patches (one to rename 
existing opp, another one to add new opp nodes). Nevertheless:

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

(if for some reason you send another revision splitting this patch, feel 
free to keep the RB tag).


>   
> -					rpmhpd_opp_low_svs: opp3 {
> +					rpmhpd_opp_lov_svs_d2: opp-52 {
> +						opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS_D2>;
> +					};
> +
> +					rpmhpd_opp_lov_svs_d1: opp-56 {
> +						opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS_D1>;
> +					};
> +
> +					rpmhpd_opp_lov_svs_d0: opp-60 {
> +						opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS_D0>;
> +					};
> +
> +					rpmhpd_opp_low_svs: opp-64 {
>   						opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
>   					};
>   
> -					rpmhpd_opp_svs: opp4 {
> +					rpmhpd_opp_low_svs_l1: opp-80 {
> +						opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS_L1>;
> +					};
> +
> +					rpmhpd_opp_svs: opp-128 {
>   						opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
>   					};
>   
> -					rpmhpd_opp_svs_l1: opp5 {
> +					rpmhpd_opp_svs_l0: opp-144 {
> +						opp-level = <RPMH_REGULATOR_LEVEL_SVS_L0>;
> +					};
> +
> +					rpmhpd_opp_svs_l1: opp-192 {
>   						opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
>   					};
>   
> -					rpmhpd_opp_nom: opp6 {
> +					rpmhpd_opp_nom: opp-256 {
>   						opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
>   					};
>   
> -					rpmhpd_opp_nom_l1: opp7 {
> +					rpmhpd_opp_nom_l1: opp-320 {
>   						opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
>   					};
>   
> -					rpmhpd_opp_nom_l2: opp8 {
> +					rpmhpd_opp_nom_l2: opp-336 {
>   						opp-level = <RPMH_REGULATOR_LEVEL_NOM_L2>;
>   					};
>   
> -					rpmhpd_opp_turbo: opp9 {
> +					rpmhpd_opp_turbo: opp-384 {
>   						opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
>   					};
>   
> -					rpmhpd_opp_turbo_l1: opp10 {
> +					rpmhpd_opp_turbo_l1: opp-416 {
>   						opp-level = <RPMH_REGULATOR_LEVEL_TURBO_L1>;
>   					};
>   				};
> 

-- 
With best wishes
Dmitry