arm64: dts: mt8192: Add cpu-idle-states

Add idle states for cpu-off and cluster-off.
Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Link: https://lore.kernel.org/r/20201222045820.26355-1-jamesjj.liao@mediatek.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8192.dtsi

@@ -39,6 +39,7 @@ cpu0: cpu@0 {
 			reg = <0x000>;
 			enable-method = "psci";
 			clock-frequency = <1701000000>;
+			cpu-idle-states = <&cpuoff_l &clusteroff_l>;
 			next-level-cache = <&l2_0>;
 			capacity-dmips-mhz = <530>;
 		};
@@ -49,6 +50,7 @@ cpu1: cpu@100 {
 			reg = <0x100>;
 			enable-method = "psci";
 			clock-frequency = <1701000000>;
+			cpu-idle-states = <&cpuoff_l &clusteroff_l>;
 			next-level-cache = <&l2_0>;
 			capacity-dmips-mhz = <530>;
 		};
@@ -59,6 +61,7 @@ cpu2: cpu@200 {
 			reg = <0x200>;
 			enable-method = "psci";
 			clock-frequency = <1701000000>;
+			cpu-idle-states = <&cpuoff_l &clusteroff_l>;
 			next-level-cache = <&l2_0>;
 			capacity-dmips-mhz = <530>;
 		};
@@ -69,6 +72,7 @@ cpu3: cpu@300 {
 			reg = <0x300>;
 			enable-method = "psci";
 			clock-frequency = <1701000000>;
+			cpu-idle-states = <&cpuoff_l &clusteroff_l>;
 			next-level-cache = <&l2_0>;
 			capacity-dmips-mhz = <530>;
 		};
@@ -79,6 +83,7 @@ cpu4: cpu@400 {
 			reg = <0x400>;
 			enable-method = "psci";
 			clock-frequency = <2171000000>;
+			cpu-idle-states = <&cpuoff_b &clusteroff_b>;
 			next-level-cache = <&l2_1>;
 			capacity-dmips-mhz = <1024>;
 		};
@@ -89,6 +94,7 @@ cpu5: cpu@500 {
 			reg = <0x500>;
 			enable-method = "psci";
 			clock-frequency = <2171000000>;
+			cpu-idle-states = <&cpuoff_b &clusteroff_b>;
 			next-level-cache = <&l2_1>;
 			capacity-dmips-mhz = <1024>;
 		};
@@ -99,6 +105,7 @@ cpu6: cpu@600 {
 			reg = <0x600>;
 			enable-method = "psci";
 			clock-frequency = <2171000000>;
+			cpu-idle-states = <&cpuoff_b &clusteroff_b>;
 			next-level-cache = <&l2_1>;
 			capacity-dmips-mhz = <1024>;
 		};
@@ -109,6 +116,7 @@ cpu7: cpu@700 {
 			reg = <0x700>;
 			enable-method = "psci";
 			clock-frequency = <2171000000>;
+			cpu-idle-states = <&cpuoff_b &clusteroff_b>;
 			next-level-cache = <&l2_1>;
 			capacity-dmips-mhz = <1024>;
 		};
@@ -158,6 +166,42 @@ l2_1: l2-cache1 {
 		l3_0: l3-cache {
 			compatible = "cache";
 		};
+
+		idle-states {
+			entry-method = "arm,psci";
+			cpuoff_l: cpuoff_l {
+				compatible = "arm,idle-state";
+				arm,psci-suspend-param = <0x00010001>;
+				local-timer-stop;
+				entry-latency-us = <55>;
+				exit-latency-us = <140>;
+				min-residency-us = <780>;
+			};
+			cpuoff_b: cpuoff_b {
+				compatible = "arm,idle-state";
+				arm,psci-suspend-param = <0x00010001>;
+				local-timer-stop;
+				entry-latency-us = <35>;
+				exit-latency-us = <145>;
+				min-residency-us = <720>;
+			};
+			clusteroff_l: clusteroff_l {
+				compatible = "arm,idle-state";
+				arm,psci-suspend-param = <0x01010002>;
+				local-timer-stop;
+				entry-latency-us = <60>;
+				exit-latency-us = <155>;
+				min-residency-us = <860>;
+			};
+			clusteroff_b: clusteroff_b {
+				compatible = "arm,idle-state";
+				arm,psci-suspend-param = <0x01010002>;
+				local-timer-stop;
+				entry-latency-us = <40>;
+				exit-latency-us = <155>;
+				min-residency-us = <780>;
+			};
+		};
 	};
 
 	pmu-a55 {