linux-kernel - [PATCH] arm64: dts: sdm845: Add PSCI cpuidle low power states

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Message-Id: <1539622953-4188-1-git-send-email-rplsssn@codeaurora.org>
Date:   Mon, 15 Oct 2018 22:32:33 +0530
From:   "Raju P.L.S.S.S.N" <rplsssn@...eaurora.org>
To:     andy.gross@...aro.org, david.brown@...aro.org,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org
Cc:     rnayak@...eaurora.org, bjorn.andersson@...aro.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, sboyd@...nel.org, evgreen@...omium.org,
        dianders@...omium.org, mka@...omium.org, ilina@...eaurora.org,
        "Raju P.L.S.S.S.N" <rplsssn@...eaurora.org>
Subject: [PATCH] arm64: dts: sdm845: Add PSCI cpuidle low power states

Add device bindings for cpuidle states for cpu devices.

Cc: <devicetree@...r.kernel.org>
Signed-off-by: Raju P.L.S.S.S.N <rplsssn@...eaurora.org>
---
 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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