Commit 4acf7ece authored by Konrad Dybcio's avatar Konrad Dybcio Committed by Bjorn Andersson
Browse files

arm64: dts: qcom: qcm2290: Add CPU idle states 



Add the (scarce) idle states for the individual CPUs, as well as the
whole cluster. This enables deeper-than-WFI cpuidle

Signed-off-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: default avatarStephan Gerhold <stephan@gerhold.net>
Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230606-topic-qcm2290_idlestates-v2-1-580a5a2d28c9@linaro.org
parent abc49a7c

arch/arm64/boot/dts/qcom/qcm2290.dtsi

+61 −0
Original line number Diff line number Diff line
@@ -48,6 +48,8 @@ 
			enable-method = "psci";

			next-level-cache = <&L2_0>;

			qcom,freq-domain = <&cpufreq_hw 0>;

			power-domains = <&CPU_PD0>;

			power-domain-names = "psci";

			L2_0: l2-cache {

				compatible = "cache";

				cache-level = <2>;
@@ -64,6 +66,8 @@ 
			enable-method = "psci";

			next-level-cache = <&L2_0>;

			qcom,freq-domain = <&cpufreq_hw 0>;

			power-domains = <&CPU_PD1>;

			power-domain-names = "psci";

		};



		CPU2: cpu@2 {
@@ -76,6 +80,8 @@ 
			enable-method = "psci";

			next-level-cache = <&L2_0>;

			qcom,freq-domain = <&cpufreq_hw 0>;

			power-domains = <&CPU_PD2>;

			power-domain-names = "psci";

		};



		CPU3: cpu@3 {
@@ -88,6 +94,8 @@ 
			enable-method = "psci";

			next-level-cache = <&L2_0>;

			qcom,freq-domain = <&cpufreq_hw 0>;

			power-domains = <&CPU_PD3>;

			power-domain-names = "psci";

		};



		cpu-map {
@@ -109,6 +117,30 @@ 
				};

			};

		};



		domain-idle-states {

			CLUSTER_SLEEP: cluster-sleep-0 {

				compatible = "domain-idle-state";

				arm,psci-suspend-param = <0x41000043>;

				entry-latency-us = <800>;

				exit-latency-us = <2118>;

				min-residency-us = <7376>;

			};

		};



		idle-states {

			entry-method = "psci";



			CPU_SLEEP: cpu-sleep-0 {

				compatible = "arm,idle-state";

				idle-state-name = "power-collapse";

				arm,psci-suspend-param = <0x40000003>;

				entry-latency-us = <290>;

				exit-latency-us = <376>;

				min-residency-us = <1182>;

				local-timer-stop;

			};

		};

	};



	firmware {
@@ -134,6 +166,35 @@ 
	psci {

		compatible = "arm,psci-1.0";

		method = "smc";



		CPU_PD0: power-domain-cpu0 {

			#power-domain-cells = <0>;

			power-domains = <&CLUSTER_PD>;

			domain-idle-states = <&CPU_SLEEP>;

		};



		CPU_PD1: power-domain-cpu1 {

			#power-domain-cells = <0>;

			power-domains = <&CLUSTER_PD>;

			domain-idle-states = <&CPU_SLEEP>;

		};



		CPU_PD2: power-domain-cpu2 {

			#power-domain-cells = <0>;

			power-domains = <&CLUSTER_PD>;

			domain-idle-states = <&CPU_SLEEP>;

		};



		CPU_PD3: power-domain-cpu3 {

			#power-domain-cells = <0>;

			power-domains = <&CLUSTER_PD>;

			domain-idle-states = <&CPU_SLEEP>;

		};



		CLUSTER_PD: power-domain-cpu-cluster {

			#power-domain-cells = <0>;

			domain-idle-states = <&CLUSTER_SLEEP>;

		};

	};



	reserved_memory: reserved-memory {