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Commit 8ed46368 authored by orenbh's avatar orenbh Committed by Gregory CLEMENT
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arm64: dts: marvell: add CPU Idle power state support on Armada 7K/8K 



This patch adds CPU deep Idle and Cluster deep Idle states BUT it defines
the idle state for each cpu (defined under cpu-idle-states parameter)
only for the quad version therefore it does NOT activate CPU Idle
capability for the other version.

[gregory: extract from a larger patch]
Signed-off-by: default avatarorenbh <orenbh@marvell.com>
Signed-off-by: default avatarGregory CLEMENT <gregory.clement@bootlin.com>
parent 92e5d4e9

arch/arm64/boot/dts/marvell/armada-ap806-quad.dtsi

+4 −0
Original line number Diff line number Diff line
@@ -20,24 +20,28 @@ 
			compatible = "arm,cortex-a72", "arm,armv8";

			reg = <0x000>;

			enable-method = "psci";

			cpu-idle-states = <&CPU_SLEEP_0>;

		};

		cpu1: cpu@1 {

			device_type = "cpu";

			compatible = "arm,cortex-a72", "arm,armv8";

			reg = <0x001>;

			enable-method = "psci";

			cpu-idle-states = <&CPU_SLEEP_0>;

		};

		cpu2: cpu@100 {

			device_type = "cpu";

			compatible = "arm,cortex-a72", "arm,armv8";

			reg = <0x100>;

			enable-method = "psci";

			cpu-idle-states = <&CPU_SLEEP_0>;

		};

		cpu3: cpu@101 {

			device_type = "cpu";

			compatible = "arm,cortex-a72", "arm,armv8";

			reg = <0x101>;

			enable-method = "psci";

			cpu-idle-states = <&CPU_SLEEP_0>;

		};

	};

};

arch/arm64/boot/dts/marvell/armada-ap806.dtsi

+27 −0
Original line number Diff line number Diff line
@@ -28,6 +28,33 @@ 
		method = "smc";

	};



	cpus {

		#address-cells = <1>;

		#size-cells = <0>;



		idle_states {

			entry_method = "arm,pcsi";



			CPU_SLEEP_0: cpu-sleep-0 {

				compatible = "arm,idle-state";

				local-timer-stop;

				arm,psci-suspend-param = <0x0010000>;

				entry-latency-us = <80>;

				exit-latency-us  = <160>;

				min-residency-us = <320>;

			};



			CLUSTER_SLEEP_0: cluster-sleep-0 {

				compatible = "arm,idle-state";

				local-timer-stop;

				arm,psci-suspend-param = <0x1010000>;

				entry-latency-us = <500>;

				exit-latency-us = <1000>;

				min-residency-us = <2500>;

			};

		};

	};



	ap806 {

		#address-cells = <2>;

		#size-cells = <2>;