arm64: tegra: Add CPU idle states properties for Tegra210 (da77c6d9) · Commits · 戴 / test

Add idle states properties for generic ARM CPU idle driver. This includes a cpu-sleep state which is the power down state of CPU cores. Signed-off-by:

Joseph Lo <josephl@nvidia.com> Acked-by:

Jon Hunter <jonathanh@nvidia.com> Acked-by:

Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by:

Thierry Reding <treding@nvidia.com>

arch/arm64/boot/dts/nvidia/tegra210.dtsi

+19 −0

Original line number	Diff line number	Diff line
		@@ -1371,24 +1371,43 @@
		<&dfll>;
		clock-names = "cpu_g", "pll_x", "pll_p", "dfll";
		clock-latency = <300000>;
		cpu-idle-states = <&CPU_SLEEP>;
		};

		cpu@1 {
		device_type = "cpu";
		compatible = "arm,cortex-a57";
		reg = <1>;
		cpu-idle-states = <&CPU_SLEEP>;
		};

		cpu@2 {
		device_type = "cpu";
		compatible = "arm,cortex-a57";
		reg = <2>;
		cpu-idle-states = <&CPU_SLEEP>;
		};

		cpu@3 {
		device_type = "cpu";
		compatible = "arm,cortex-a57";
		reg = <3>;
		cpu-idle-states = <&CPU_SLEEP>;
		};

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

		CPU_SLEEP: cpu-sleep {
		compatible = "arm,idle-state";
		arm,psci-suspend-param = <0x40000007>;
		entry-latency-us = <100>;
		exit-latency-us = <30>;
		min-residency-us = <1000>;
		wakeup-latency-us = <130>;
		idle-state-name = "cpu-sleep";
		status = "disabled";
		};
		};
		};

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