linux-kernel - Re: [PATCH v2 9/9] arm64: dts: msm8996: Add proper capacity scaling for the cpus

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Date:   Tue, 21 May 2019 20:50:28 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Amit Kucheria <amit.kucheria@...aro.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        agross@...nel.org, niklas.cassel@...aro.org,
        marc.w.gonzalez@...e.fr, sibis@...eaurora.org,
        daniel.lezcano@...aro.org, Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Li Yang <leoyang.li@....com>, Shawn Guo <shawnguo@...nel.org>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2 9/9] arm64: dts: msm8996: Add proper capacity scaling
 for the cpus

On Tue 21 May 02:35 PDT 2019, Amit Kucheria wrote:

> msm8996 features 4 cpus - 2 in each cluster. However, all cpus implement
> the same microarchitecture and the two clusters only differ in the
> maximum frequency attainable by the CPUs.
> 
> Add capacity-dmips-mhz property to allow the topology code to determine
> the actual capacity by taking into account the highest frequency for
> each CPU.
> 
> Signed-off-by: Amit Kucheria <amit.kucheria@...aro.org>
> Suggested-by: Daniel Lezcano <daniel.lezcano@...aro.org>

Applied

Regards,
Bjorn

> ---
>  arch/arm64/boot/dts/qcom/msm8996.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
> index 4f2fb7885f39..e0e8f30ce11a 100644
> --- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
> @@ -96,6 +96,7 @@
>  			reg = <0x0 0x0>;
>  			enable-method = "psci";
>  			cpu-idle-states = <&CPU_SLEEP_0>;
> +			capacity-dmips-mhz = <1024>;
>  			next-level-cache = <&L2_0>;
>  			L2_0: l2-cache {
>  			      compatible = "cache";
> @@ -109,6 +110,7 @@
>  			reg = <0x0 0x1>;
>  			enable-method = "psci";
>  			cpu-idle-states = <&CPU_SLEEP_0>;
> +			capacity-dmips-mhz = <1024>;
>  			next-level-cache = <&L2_0>;
>  		};
>  
> @@ -118,6 +120,7 @@
>  			reg = <0x0 0x100>;
>  			enable-method = "psci";
>  			cpu-idle-states = <&CPU_SLEEP_0>;
> +			capacity-dmips-mhz = <1024>;
>  			next-level-cache = <&L2_1>;
>  			L2_1: l2-cache {
>  			      compatible = "cache";
> @@ -131,6 +134,7 @@
>  			reg = <0x0 0x101>;
>  			enable-method = "psci";
>  			cpu-idle-states = <&CPU_SLEEP_0>;
> +			capacity-dmips-mhz = <1024>;
>  			next-level-cache = <&L2_1>;
>  		};
>  
> -- 
> 2.17.1
>