linux-kernel - Re: [PATCH 1/6] arm64: dts: qcom: sm8250: drop incorrect domain idle states properties

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Message-ID: <880c0932-117f-61cd-dd97-c36076869c3b@linaro.org>
Date:   Wed, 29 Mar 2023 01:51:38 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Ulf Hansson <ulf.hansson@...aro.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     Neil Armstrong <neil.armstrong@...aro.org>,
        Linux PM <linux-pm@...r.kernel.org>
Subject: Re: [PATCH 1/6] arm64: dts: qcom: sm8250: drop incorrect domain idle
 states properties

On 24/03/2023 09:38, Krzysztof Kozlowski wrote:
> Domain idle states do not use 'idle-state-name' and 'local-timer-stop':
> 
>    sm8250-hdk.dtb: domain-idle-states: cluster-sleep-0: 'idle-state-name', 'local-timer-stop' do not match any of the regexes: 'pinctrl-[0-9]+'
> 
> Reported-by: Neil Armstrong <neil.armstrong@...aro.org>
> Link: https://lore.kernel.org/all/20230323-topic-sm8450-upstream-dt-bindings-fixes-v1-4-3ead1e418fe4@linaro.org/
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>   arch/arm64/boot/dts/qcom/sm8250.dtsi | 2 --
>   1 file changed, 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> index 79d67b466856..9cf2de87c632 100644
> --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> @@ -354,12 +354,10 @@ BIG_CPU_SLEEP_0: cpu-sleep-1-0 {
>   		domain-idle-states {
>   			CLUSTER_SLEEP_0: cluster-sleep-0 {
>   				compatible = "domain-idle-state";
> -				idle-state-name = "cluster-llcc-off";
>   				arm,psci-suspend-param = <0x4100c244>;
>   				entry-latency-us = <3264>;
>   				exit-latency-us = <6562>;
>   				min-residency-us = <9987>;
> -				local-timer-stop;

Hmm, so we support setting the broadcast timer when using plain PSCI 
idle states, but not when using the domain-based idle states.

Ulf, Rafael, Daniel, is that an omission for the domain-based idle 
support? Or is it handled in some other way?

>   			};
>   		};
>   	};

-- 
With best wishes
Dmitry