linux-kernel - Re: [PATCH v3 07/17] arm64: dts: sdm845: Add DSI and MDP OPP tables and power-domains

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Date:   Tue, 28 Apr 2020 17:27:05 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Rajendra Nayak <rnayak@...eaurora.org>
Cc:     viresh.kumar@...aro.org, sboyd@...nel.org,
        bjorn.andersson@...aro.org, agross@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 07/17] arm64: dts: sdm845: Add DSI and MDP OPP tables
 and power-domains

On Tue, Apr 28, 2020 at 07:02:55PM +0530, Rajendra Nayak wrote:
> Add the OPP tables for DSI and MDP based on the perf state/clk
> requirements, and add the power-domains property to specify the
> scalable power domain.
> 
> Signed-off-by: Rajendra Nayak <rnayak@...eaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm845.dtsi | 59 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 59 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index 36b9fb1..7a625ad 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -3309,6 +3309,59 @@
>  			#reset-cells = <1>;
>  		};
>  
> +		mdp_opp_table: mdp-opp-table {
> +			compatible = "operating-points-v2";
> +
> +			opp-19200000 {
> +				opp-hz = /bits/ 64 <19200000>;
> +				required-opps = <&rpmhpd_opp_min_svs>;
> +			};
> +
> +			opp-171428571 {
> +				opp-hz = /bits/ 64 <171428571>;
> +				required-opps = <&rpmhpd_opp_low_svs>;
> +			};
> +
> +			opp-344000000 {
> +				opp-hz = /bits/ 64 <344000000>;
> +				required-opps = <&rpmhpd_opp_svs_l1>;
> +			};
> +
> +			opp-430000000 {
> +				opp-hz = /bits/ 64 <430000000>;
> +				required-opps = <&rpmhpd_opp_nom>;
> +			};
> +		};

as commented on "[v3,03/17] arm64: dts: sdm845: Add OPP table for all qup
devices" (https://patchwork.kernel.org/patch/11514693/) this table should
probably be inside the 'mdp' node.

> +
> +		dsi_opp_table: dsi-opp-table {
> +			compatible = "operating-points-v2";
> +
> +			opp-19200000 {
> +				opp-hz = /bits/ 64 <19200000>;
> +				required-opps = <&rpmhpd_opp_min_svs>;
> +			};
> +
> +			opp-180000000 {
> +				opp-hz = /bits/ 64 <180000000>;
> +				required-opps = <&rpmhpd_opp_low_svs>;
> +			};
> +
> +			opp-275000000 {
> +				opp-hz = /bits/ 64 <275000000>;
> +				required-opps = <&rpmhpd_opp_svs>;
> +			};
> +
> +			opp-328580000 {
> +				opp-hz = /bits/ 64 <328580000>;
> +				required-opps = <&rpmhpd_opp_svs_l1>;
> +			};
> +
> +			opp-358000000 {
> +				opp-hz = /bits/ 64 <358000000>;
> +				required-opps = <&rpmhpd_opp_nom>;
> +			};
> +		};
> +

depending on the outcome of the discussion mentioned above this might have
to move into the 'dsi0' node.