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Subject[PATCH v2 7/9] arm64: dts: qcom: msm8998: Add PSCI cpuidle low power states
Date
Add device bindings for cpuidle states for cpu devices.

Cc: Marc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
arch/arm64/boot/dts/qcom/msm8998.dtsi | 50 +++++++++++++++++++++++++++
1 file changed, 50 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8998.dtsi b/arch/arm64/boot/dts/qcom/msm8998.dtsi
index 3fd0769fe648..54810980fcf9 100644
--- a/arch/arm64/boot/dts/qcom/msm8998.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8998.dtsi
@@ -78,6 +78,7 @@
compatible = "arm,armv8";
reg = <0x0 0x0>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
efficiency = <1024>;
next-level-cache = <&L2_0>;
L2_0: l2-cache {
@@ -97,6 +98,7 @@
compatible = "arm,armv8";
reg = <0x0 0x1>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
efficiency = <1024>;
next-level-cache = <&L2_0>;
L1_I_1: l1-icache {
@@ -112,6 +114,7 @@
compatible = "arm,armv8";
reg = <0x0 0x2>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
efficiency = <1024>;
next-level-cache = <&L2_0>;
L1_I_2: l1-icache {
@@ -127,6 +130,7 @@
compatible = "arm,armv8";
reg = <0x0 0x3>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
efficiency = <1024>;
next-level-cache = <&L2_0>;
L1_I_3: l1-icache {
@@ -142,6 +146,7 @@
compatible = "arm,armv8";
reg = <0x0 0x100>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1>;
efficiency = <1536>;
next-level-cache = <&L2_1>;
L2_1: l2-cache {
@@ -161,6 +166,7 @@
compatible = "arm,armv8";
reg = <0x0 0x101>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1>;
efficiency = <1536>;
next-level-cache = <&L2_1>;
L1_I_101: l1-icache {
@@ -176,6 +182,7 @@
compatible = "arm,armv8";
reg = <0x0 0x102>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1>;
efficiency = <1536>;
next-level-cache = <&L2_1>;
L1_I_102: l1-icache {
@@ -191,6 +198,7 @@
compatible = "arm,armv8";
reg = <0x0 0x103>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1>;
efficiency = <1536>;
next-level-cache = <&L2_1>;
L1_I_103: l1-icache {
@@ -238,6 +246,48 @@
};
};
};
+
+ idle-states {
+ entry-method = "psci";
+
+ LITTLE_CPU_SLEEP_0: cpu-sleep-0-0 {
+ compatible = "arm,idle-state";
+ idle-state-name = "little-retention";
+ arm,psci-suspend-param = <0x00000002>;
+ entry-latency-us = <43>;
+ exit-latency-us = <86>;
+ min-residency-us = <200>;
+ };
+
+ LITTLE_CPU_SLEEP_1: cpu-sleep-0-1 {
+ compatible = "arm,idle-state";
+ idle-state-name = "little-power-collapse";
+ arm,psci-suspend-param = <0x00000003>;
+ entry-latency-us = <100>;
+ exit-latency-us = <612>;
+ min-residency-us = <1000>;
+ local-timer-stop;
+ };
+
+ BIG_CPU_SLEEP_0: cpu-sleep-1-0 {
+ compatible = "arm,idle-state";
+ idle-state-name = "big-retention";
+ arm,psci-suspend-param = <0x00000002>;
+ entry-latency-us = <41>;
+ exit-latency-us = <82>;
+ min-residency-us = <200>;
+ };
+
+ BIG_CPU_SLEEP_1: cpu-sleep-1-1 {
+ compatible = "arm,idle-state";
+ idle-state-name = "big-power-collapse";
+ arm,psci-suspend-param = <0x00000003>;
+ entry-latency-us = <100>;
+ exit-latency-us = <525>;
+ min-residency-us = <1000>;
+ local-timer-stop;
+ };
+ };
};

firmware {
--
2.17.1
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