From f6aee7af59b62a6f8a75ef57825556d14aee9b67 Mon Sep 17 00:00:00 2001 From: Amit Kucheria Date: Tue, 21 May 2019 15:05:16 +0530 Subject: [PATCH] arm64: dts: qcom: msm8996: Add PSCI cpuidle low power states Add device bindings for cpuidle states for cpu devices. msm8996 features 4 cpus - 2 in each cluster. However, all cpus implement the same microarchitecture and the two clusters only differ in the maximum frequency attainable by the CPUs. Acked-by: Daniel Lezcano Signed-off-by: Amit Kucheria Signed-off-by: Bjorn Andersson Signed-off-by: Andy Gross --- arch/arm64/boot/dts/qcom/msm8996.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi index 0f234bef90ee..778c7f0a2429 100644 --- a/arch/arm64/boot/dts/qcom/msm8996.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi @@ -102,6 +102,7 @@ compatible = "qcom,kryo"; reg = <0x0 0x0>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; next-level-cache = <&L2_0>; L2_0: l2-cache { compatible = "cache"; @@ -114,6 +115,7 @@ compatible = "qcom,kryo"; reg = <0x0 0x1>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; next-level-cache = <&L2_0>; }; @@ -122,6 +124,7 @@ compatible = "qcom,kryo"; reg = <0x0 0x100>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; next-level-cache = <&L2_1>; L2_1: l2-cache { compatible = "cache"; @@ -134,6 +137,7 @@ compatible = "qcom,kryo"; reg = <0x0 0x101>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; next-level-cache = <&L2_1>; }; @@ -158,6 +162,19 @@ }; }; }; + + idle-states { + entry-method = "psci"; + + CPU_SLEEP_0: cpu-sleep-0 { + compatible = "arm,idle-state"; + idle-state-name = "standalone-power-collapse"; + arm,psci-suspend-param = <0x00000004>; + entry-latency-us = <40>; + exit-latency-us = <80>; + min-residency-us = <300>; + }; + }; }; thermal-zones { -- 2.30.2