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Commit 5334e1a2 authored by Yuantian Tang's avatar Yuantian Tang Committed by Shawn Guo
Browse files

arm64: dts: ls1088a: add cpu idle support 



ls1088a supports another cpu idle state which is ph20 which saves
more power when cpu is idle.
It was implemented through psci firmware.

Signed-off-by: default avatarTang Yuantian <andy.tang@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent 1e09dec9

arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi

+22 −0
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ 
			compatible = "arm,cortex-a53";

			reg = <0x0>;

			clocks = <&clockgen 1 0>;

			cpu-idle-states = <&CPU_PH20>;

			#cooling-cells = <2>;

		};
@@ -74,6 +75,7 @@ 
			compatible = "arm,cortex-a53";

			reg = <0x1>;

			clocks = <&clockgen 1 0>;

			cpu-idle-states = <&CPU_PH20>;

		};



		cpu2: cpu@2 {
@@ -81,6 +83,7 @@ 
			compatible = "arm,cortex-a53";

			reg = <0x2>;

			clocks = <&clockgen 1 0>;

			cpu-idle-states = <&CPU_PH20>;

		};



		cpu3: cpu@3 {
@@ -88,6 +91,7 @@ 
			compatible = "arm,cortex-a53";

			reg = <0x3>;

			clocks = <&clockgen 1 0>;

			cpu-idle-states = <&CPU_PH20>;

		};



		cpu4: cpu@100 {
@@ -95,6 +99,7 @@ 
			compatible = "arm,cortex-a53";

			reg = <0x100>;

			clocks = <&clockgen 1 1>;

			cpu-idle-states = <&CPU_PH20>;

			#cooling-cells = <2>;

		};
@@ -103,6 +108,7 @@ 
			compatible = "arm,cortex-a53";

			reg = <0x101>;

			clocks = <&clockgen 1 1>;

			cpu-idle-states = <&CPU_PH20>;

		};



		cpu6: cpu@102 {
@@ -110,6 +116,7 @@ 
			compatible = "arm,cortex-a53";

			reg = <0x102>;

			clocks = <&clockgen 1 1>;

			cpu-idle-states = <&CPU_PH20>;

		};



		cpu7: cpu@103 {
@@ -117,6 +124,16 @@ 
			compatible = "arm,cortex-a53";

			reg = <0x103>;

			clocks = <&clockgen 1 1>;

			cpu-idle-states = <&CPU_PH20>;

		};



		CPU_PH20: cpu-ph20 {

			compatible = "arm,idle-state";

			idle-state-name = "PH20";

			arm,psci-suspend-param = <0x00010000>;

			entry-latency-us = <1000>;

			exit-latency-us = <1000>;

			min-residency-us = <3000>;

		};

	};
@@ -140,6 +157,11 @@ 
			     <1 10 IRQ_TYPE_LEVEL_LOW>;/* Hypervisor PPI */

	};



	psci {

		compatible = "arm,psci-0.2";

		method = "smc";

	};



	sysclk: sysclk {

		compatible = "fixed-clock";

		#clock-cells = <0>;