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Subject[PATCH v2 8/9] arm64: dts: qcom: sdm845: Add PSCI cpuidle low power states
Date
From: "Raju P.L.S.S.S.N" <rplsssn@codeaurora.org>

Add device bindings for cpuidle states for cpu devices.

Cc: <mkshah@codeaurora.org>
Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
[amit: rename the idle-states to more generic names and fixups]
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
arch/arm64/boot/dts/qcom/sdm845.dtsi | 69 ++++++++++++++++++++++++++++
1 file changed, 69 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index 5308f1671824..a0ae6bf033ee 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -119,6 +119,7 @@
compatible = "qcom,kryo385";
reg = <0x0 0x0>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1 &CLUSTER_SLEEP_0>;
qcom,freq-domain = <&cpufreq_hw 0>;
#cooling-cells = <2>;
next-level-cache = <&L2_0>;
@@ -136,6 +137,8 @@
compatible = "qcom,kryo385";
reg = <0x0 0x100>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1
+ &CLUSTER_SLEEP_0>;
qcom,freq-domain = <&cpufreq_hw 0>;
#cooling-cells = <2>;
next-level-cache = <&L2_100>;
@@ -150,6 +153,8 @@
compatible = "qcom,kryo385";
reg = <0x0 0x200>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1
+ &CLUSTER_SLEEP_0>;
qcom,freq-domain = <&cpufreq_hw 0>;
#cooling-cells = <2>;
next-level-cache = <&L2_200>;
@@ -164,6 +169,8 @@
compatible = "qcom,kryo385";
reg = <0x0 0x300>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1
+ &CLUSTER_SLEEP_0>;
qcom,freq-domain = <&cpufreq_hw 0>;
#cooling-cells = <2>;
next-level-cache = <&L2_300>;
@@ -178,6 +185,8 @@
compatible = "qcom,kryo385";
reg = <0x0 0x400>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1
+ &CLUSTER_SLEEP_0>;
qcom,freq-domain = <&cpufreq_hw 1>;
#cooling-cells = <2>;
next-level-cache = <&L2_400>;
@@ -192,6 +201,8 @@
compatible = "qcom,kryo385";
reg = <0x0 0x500>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1
+ &CLUSTER_SLEEP_0>;
qcom,freq-domain = <&cpufreq_hw 1>;
#cooling-cells = <2>;
next-level-cache = <&L2_500>;
@@ -206,6 +217,8 @@
compatible = "qcom,kryo385";
reg = <0x0 0x600>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1
+ &CLUSTER_SLEEP_0>;
qcom,freq-domain = <&cpufreq_hw 1>;
#cooling-cells = <2>;
next-level-cache = <&L2_600>;
@@ -220,6 +233,8 @@
compatible = "qcom,kryo385";
reg = <0x0 0x700>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1
+ &CLUSTER_SLEEP_0>;
qcom,freq-domain = <&cpufreq_hw 1>;
#cooling-cells = <2>;
next-level-cache = <&L2_700>;
@@ -228,6 +243,60 @@
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 = <350>;
+ exit-latency-us = <461>;
+ min-residency-us = <1890>;
+ 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 = <360>;
+ exit-latency-us = <531>;
+ min-residency-us = <3934>;
+ 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 = <264>;
+ exit-latency-us = <621>;
+ min-residency-us = <952>;
+ local-timer-stop;
+ };
+
+ BIG_CPU_SLEEP_1: cpu-sleep-1-1 {
+ compatible = "arm,idle-state";
+ idle-state-name = "big-rail-power-down";
+ arm,psci-suspend-param = <0x40000004>;
+ entry-latency-us = <702>;
+ exit-latency-us = <1061>;
+ min-residency-us = <4488>;
+ local-timer-stop;
+ };
+
+ CLUSTER_SLEEP_0: cluster-sleep-0 {
+ compatible = "arm,idle-state";
+ idle-state-name = "cluster-power-down";
+ arm,psci-suspend-param = <0x400000F4>;
+ entry-latency-us = <3263>;
+ exit-latency-us = <6562>;
+ min-residency-us = <9987>;
+ local-timer-stop;
+ };
+ };
};

pmu {
--
2.17.1
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