From: Amit Kucheria <amit.kucheria@xxxxxxxxxx>
Add device bindings for cpuidle states for cpu devices.
[marc: rebase, fix arm,psci-suspend-param, fix entry-latency-us]
Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Signed-off-by: Amit Kucheria <amit.kucheria@xxxxxxxxxx>
Signed-off-by: Marc Gonzalez <marc.w.gonzalez@xxxxxxx>
---
Changes from v3:
- Fixup all 4 entry-latency-us (Niklas)
Changes from v2:
- Rebase
- Fixup arm,psci-suspend-param for power-collapse states (otherwise: reboot)
---
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 412195b9794c..ac6bd32c0e7d 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>;
next-level-cache = <&L2_0>;
L2_0: l2-cache {
compatible = "arm,arch-cache";
@@ -96,6 +97,7 @@
compatible = "arm,armv8";
reg = <0x0 0x1>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
next-level-cache = <&L2_0>;
L1_I_1: l1-icache {
compatible = "arm,arch-cache";
@@ -110,6 +112,7 @@
compatible = "arm,armv8";
reg = <0x0 0x2>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
next-level-cache = <&L2_0>;
L1_I_2: l1-icache {
compatible = "arm,arch-cache";
@@ -124,6 +127,7 @@
compatible = "arm,armv8";
reg = <0x0 0x3>;
enable-method = "psci";
+ cpu-idle-states = <&LITTLE_CPU_SLEEP_0 &LITTLE_CPU_SLEEP_1>;
next-level-cache = <&L2_0>;
L1_I_3: l1-icache {
compatible = "arm,arch-cache";
@@ -138,6 +142,7 @@
compatible = "arm,armv8";
reg = <0x0 0x100>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1>;
next-level-cache = <&L2_1>;
L2_1: l2-cache {
compatible = "arm,arch-cache";
@@ -156,6 +161,7 @@
compatible = "arm,armv8";
reg = <0x0 0x101>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1>;
next-level-cache = <&L2_1>;
L1_I_101: l1-icache {
compatible = "arm,arch-cache";
@@ -170,6 +176,7 @@
compatible = "arm,armv8";
reg = <0x0 0x102>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1>;
next-level-cache = <&L2_1>;
L1_I_102: l1-icache {
compatible = "arm,arch-cache";
@@ -184,6 +191,7 @@
compatible = "arm,armv8";
reg = <0x0 0x103>;
enable-method = "psci";
+ cpu-idle-states = <&BIG_CPU_SLEEP_0 &BIG_CPU_SLEEP_1>;
next-level-cache = <&L2_1>;
L1_I_103: l1-icache {
compatible = "arm,arch-cache";
@@ -230,6 +238,48 @@
};
};
};
+
+ 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 = <81>;
+ 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 = <0x40000003>;
+ entry-latency-us = <273>;
+ 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 = <79>;
+ 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 = <0x40000003>;
+ entry-latency-us = <336>;
+ exit-latency-us = <525>;
+ min-residency-us = <1000>;
+ local-timer-stop;
+ };
+ };
};
firmware {
--
2.17.1
