arm64: zynqmp: Add idle state for ZynqMP (1e4e25c8) · Commits · 戴 / test

Added the idle-states node to describe zynqmp idle states. Only cpu-sleep-0 idle state is added in this patch. References to the idle-states node are added in all CPU nodes. Time values: entry/exit latencies and min-residency, needs to be tuned. arm,psci-suspend-param is selected to comply with PSCIv1.0 and Extended StateID format. Signed-off-by:

Stefan Krsmanovic <stefan.krsmanovic@aggios.com> Acked-by:

Will Wong <willw@xilinx.com> Signed-off-by:

Michal Simek <michal.simek@xilinx.com>

arch/arm64/boot/dts/xilinx/zynqmp.dtsi

+17 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@
		device_type = "cpu";
		enable-method = "psci";
		reg = <0x0>;
		cpu-idle-states = <&CPU_SLEEP_0>;
		};

		cpu1: cpu@1 {
		@@ -32,6 +33,7 @@
		device_type = "cpu";
		enable-method = "psci";
		reg = <0x1>;
		cpu-idle-states = <&CPU_SLEEP_0>;
		};

		cpu2: cpu@2 {
		@@ -39,6 +41,7 @@
		device_type = "cpu";
		enable-method = "psci";
		reg = <0x2>;
		cpu-idle-states = <&CPU_SLEEP_0>;
		};

		cpu3: cpu@3 {
		@@ -46,6 +49,20 @@
		device_type = "cpu";
		enable-method = "psci";
		reg = <0x3>;
		cpu-idle-states = <&CPU_SLEEP_0>;
		};

		idle-states {
		entry-method = "arm,psci";

		CPU_SLEEP_0: cpu-sleep-0 {
		compatible = "arm,idle-state";
		arm,psci-suspend-param = <0x40000000>;
		local-timer-stop;
		entry-latency-us = <300>;
		exit-latency-us = <600>;
		min-residency-us = <10000>;
		};
		};
		};

Admin message