Re: [PATCH 13/13] arm64: dts: qcom: sc7280: Add cpuidle states
From: Stephen Boyd <hidden>
Date: 2021-02-23 07:50:25
Also in:
linux-arm-msm, lkml
Quoting Rajendra Nayak (2021-02-11 23:28:50)
quoted hunk ↗ jump to hunk
diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi index 8f2002b..3b86052 100644 --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi@@ -186,12 +207,69 @@ compatible = "arm,kryo"; reg = <0x0 0x700>; enable-method = "psci"; + cpu-idle-states = <&BIG_CPU_SLEEP_0 + &BIG_CPU_SLEEP_1 + &CLUSTER_SLEEP_0>; next-level-cache = <&L2_700>; L2_700: l2-cache { compatible = "cache"; next-level-cache = <&L3_0>; }; }; + + idle-states { + entry-method = "psci"; + + LITTLE_CPU_SLEEP_0: cpu-sleep-0-0 { + compatible = "arm,idle-state"; + idle-state-name = "little-power-down"; + arm,psci-suspend-param = <0x40000003>; + entry-latency-us = <549>; + exit-latency-us = <901>; + min-residency-us = <1774>;
Are these preliminary numbers? They're the same as sc7180 from what I can tell, but presumably things changed between SoC versions?
+ local-timer-stop;
+ };
+
+ LITTLE_CPU_SLEEP_1: cpu-sleep-0-1 {
+ compatible = "arm,idle-state";
+ idle-state-name = "little-rail-power-down";
+ arm,psci-suspend-param = <0x40000004>;
+ entry-latency-us = <702>;
+ exit-latency-us = <915>;
+ min-residency-us = <4001>;
+ local-timer-stop;
+ };
+
+ BIG_CPU_SLEEP_0: cpu-sleep-1-0 {
+ compatible = "arm,idle-state";
+ idle-state-name = "big-power-down";
+ arm,psci-suspend-param = <0x40000003>;
+ entry-latency-us = <523>;
+ exit-latency-us = <1244>;
+ min-residency-us = <2207>;