Re: [PATCH] arm64: dts: sdm845: Add PSCI cpuidle low power states
From: Lina Iyer
Date: Fri Oct 19 2018 - 15:48:08 EST
On Mon, Oct 15 2018 at 11:02 -0600, Raju P.L.S.S.S.N wrote:
Add device bindings for cpuidle states for cpu devices.
Cc: <devicetree@xxxxxxxxxxxxxxx>
Signed-off-by: Raju P.L.S.S.S.N <rplsssn@xxxxxxxxxxxxxx>
---
Reviewed-by: Lina Iyer <ilina@xxxxxxxxxxxxxx>
arch/arm64/boot/dts/qcom/sdm845.dtsi | 62 ++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index 0c9a2aa..32262b0 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -96,6 +96,7 @@
reg = <0x0 0x0>;
enable-method = "psci";
next-level-cache = <&L2_0>;
+ cpu-idle-states = <&C0_CPU_SPC &C0_CPU_PC &CLUSTER_PC>;
L2_0: l2-cache {
compatible = "cache";
next-level-cache = <&L3_0>;
@@ -111,6 +112,7 @@
reg = <0x0 0x100>;
enable-method = "psci";
next-level-cache = <&L2_100>;
+ cpu-idle-states = <&C0_CPU_SPC &C0_CPU_PC &CLUSTER_PC>;
L2_100: l2-cache {
compatible = "cache";
next-level-cache = <&L3_0>;
@@ -123,6 +125,7 @@
reg = <0x0 0x200>;
enable-method = "psci";
next-level-cache = <&L2_200>;
+ cpu-idle-states = <&C0_CPU_SPC &C0_CPU_PC &CLUSTER_PC>;
L2_200: l2-cache {
compatible = "cache";
next-level-cache = <&L3_0>;
@@ -135,6 +138,7 @@
reg = <0x0 0x300>;
enable-method = "psci";
next-level-cache = <&L2_300>;
+ cpu-idle-states = <&C0_CPU_SPC &C0_CPU_PC &CLUSTER_PC>;
L2_300: l2-cache {
compatible = "cache";
next-level-cache = <&L3_0>;
@@ -147,6 +151,7 @@
reg = <0x0 0x400>;
enable-method = "psci";
next-level-cache = <&L2_400>;
+ cpu-idle-states = <&C4_CPU_SPC &C4_CPU_PC &CLUSTER_PC>;
L2_400: l2-cache {
compatible = "cache";
next-level-cache = <&L3_0>;
@@ -159,6 +164,7 @@
reg = <0x0 0x500>;
enable-method = "psci";
next-level-cache = <&L2_500>;
+ cpu-idle-states = <&C4_CPU_SPC &C4_CPU_PC &CLUSTER_PC>;
L2_500: l2-cache {
compatible = "cache";
next-level-cache = <&L3_0>;
@@ -171,6 +177,7 @@
reg = <0x0 0x600>;
enable-method = "psci";
next-level-cache = <&L2_600>;
+ cpu-idle-states = <&C4_CPU_SPC &C4_CPU_PC &CLUSTER_PC>;
L2_600: l2-cache {
compatible = "cache";
next-level-cache = <&L3_0>;
@@ -183,11 +190,66 @@
reg = <0x0 0x700>;
enable-method = "psci";
next-level-cache = <&L2_700>;
+ cpu-idle-states = <&C4_CPU_SPC &C4_CPU_PC &CLUSTER_PC>;
L2_700: l2-cache {
compatible = "cache";
next-level-cache = <&L3_0>;
};
};
+
+ idle-states {
+ entry-method = "psci";
+
+ C0_CPU_SPC: c0_spc {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x40000003>;
+ entry-latency-us = <350>;
+ exit-latency-us = <461>;
+ min-residency-us = <1890>;
+ local-timer-stop;
+ idle-state-name = "pc";
+ };
+
+ C0_CPU_PC: c0_pc {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x40000004>;
+ entry-latency-us = <360>;
+ exit-latency-us = <531>;
+ min-residency-us = <3934>;
+ local-timer-stop;
+ idle-state-name = "rail pc";
+ };
+
+ C4_CPU_SPC: c4_spc {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x40000003>;
+ entry-latency-us = <264>;
+ exit-latency-us = <621>;
+ min-residency-us = <952>;
+ local-timer-stop;
+ idle-state-name = "pc";
+ };
+
+ C4_CPU_PC: c4_pc {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x40000004>;
+ entry-latency-us = <702>;
+ exit-latency-us = <1061>;
+ min-residency-us = <4488>;
+ local-timer-stop;
+ idle-state-name = "rail pc";
+ };
+
+ CLUSTER_PC: cluster_pc {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x400000F4>;
+ entry-latency-us = <3263>;
+ exit-latency-us = <6562>;
+ min-residency-us = <9987>;
+ local-timer-stop;
+ idle-state-name = "cluster pc";
+ };
+ };
};
pmu {
--
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