linux-kernel - Re: [PATCH] arm64: dts: qcom: sm6115: Fix up cluster idle states

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Date:   Tue, 13 Jun 2023 21:14:58 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     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>,
        Bhupesh Sharma <bhupesh.sharma@...aro.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] arm64: dts: qcom: sm6115: Fix up cluster idle states



On 13.06.2023 21:13, Konrad Dybcio wrote:
> The lowest nibble of the PSCI suspend param denotes the CPU state.
> It was mistakenly set to mimic the cluster state, resulting in poking
> PSCI with undocumented 0x2 and 0x4 states (both of which seem to be
> implemented and undocumented). Also, GDHS cluster param was wrong for C1.
> 
> Fix that.
> 
> Fixes: b5de1a9ff1f2 ("arm64: dts: qcom: sm6115: Add CPU idle-states")
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
Of course I remember about the tags right after I hit send..

Reported-by: Stephan Gerhold <stephan@...hold.net>

Konrad
>  arch/arm64/boot/dts/qcom/sm6115.dtsi | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6115.dtsi b/arch/arm64/boot/dts/qcom/sm6115.dtsi
> index 55118577bf92..07d8b842d7be 100644
> --- a/arch/arm64/boot/dts/qcom/sm6115.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm6115.dtsi
> @@ -225,7 +225,7 @@ domain-idle-states {
>  			CLUSTER_0_SLEEP_0: cluster-sleep-0-0 {
>  				/* GDHS */
>  				compatible = "domain-idle-state";
> -				arm,psci-suspend-param = <0x40000022>;
> +				arm,psci-suspend-param = <0x40000023>;
>  				entry-latency-us = <360>;
>  				exit-latency-us = <421>;
>  				min-residency-us = <782>;
> @@ -234,7 +234,7 @@ CLUSTER_0_SLEEP_0: cluster-sleep-0-0 {
>  			CLUSTER_0_SLEEP_1: cluster-sleep-0-1 {
>  				/* Power Collapse */
>  				compatible = "domain-idle-state";
> -				arm,psci-suspend-param = <0x41000044>;
> +				arm,psci-suspend-param = <0x41000043>;
>  				entry-latency-us = <800>;
>  				exit-latency-us = <2118>;
>  				min-residency-us = <7376>;
> @@ -243,7 +243,7 @@ CLUSTER_0_SLEEP_1: cluster-sleep-0-1 {
>  			CLUSTER_1_SLEEP_0: cluster-sleep-1-0 {
>  				/* GDHS */
>  				compatible = "domain-idle-state";
> -				arm,psci-suspend-param = <0x40000042>;
> +				arm,psci-suspend-param = <0x40000023>;
>  				entry-latency-us = <314>;
>  				exit-latency-us = <345>;
>  				min-residency-us = <660>;
> @@ -252,7 +252,7 @@ CLUSTER_1_SLEEP_0: cluster-sleep-1-0 {
>  			CLUSTER_1_SLEEP_1: cluster-sleep-1-1 {
>  				/* Power Collapse */
>  				compatible = "domain-idle-state";
> -				arm,psci-suspend-param = <0x41000044>;
> +				arm,psci-suspend-param = <0x41000043>;
>  				entry-latency-us = <640>;
>  				exit-latency-us = <1654>;
>  				min-residency-us = <8094>;
> 
> ---
> base-commit: 1f6ce8392d6ff486af5ca96df9ded5882c4b6977
> change-id: 20230613-topic-6115idlestates-ba341792ebb2
> 
> Best regards,