From: Konrad Dybcio <konrad.dybcio@linaro.org>
Date: Tue, 6 Jun 2023 23:04:19 +0000 (+0200)
Subject: arm64: dts: qcom: qcm2290: Add CPU idle states
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4acf7eceed31c56cf4baf11d43ee91255685f89a;p=linux.git

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: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230606-topic-qcm2290_idlestates-v2-1-580a5a2d28c9@linaro.org
---

diff --git a/arch/arm64/boot/dts/qcom/qcm2290.dtsi b/arch/arm64/boot/dts/qcom/qcm2290.dtsi
index ae5abc76bcc78..82de2f8a6180a 100644
--- a/arch/arm64/boot/dts/qcom/qcm2290.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcm2290.dtsi
@@ -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 {