Commit db2c35aa authored Jul 24, 2023 by Peng Fan Committed by Shawn Guo Jul 30, 2023

arm64: dts: imx8ulp: add cpuidle node



Add cpuidle node and enable cpuidle for dual cores. The HW mode in
Arm Trusted Firmware is SoC Application Power Domain Sleep mode.

Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

parent a9624b4e

arch/arm64/boot/dts/freescale/imx8ulp.dtsi

+15 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,7 @@
		reg = <0x0 0x0>;
		enable-method = "psci";
		next-level-cache = <&A35_L2>;
		cpu-idle-states = <&cpu_sleep>;
		};

		A35_1: cpu@1 {
		@@ -48,6 +49,7 @@
		reg = <0x0 0x1>;
		enable-method = "psci";
		next-level-cache = <&A35_L2>;
		cpu-idle-states = <&cpu_sleep>;
		};

		A35_L2: l2-cache0 {
		@@ -55,6 +57,19 @@
		cache-level = <2>;
		cache-unified;
		};

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

		cpu_sleep: cpu-sleep {
		compatible = "arm,idle-state";
		arm,psci-suspend-param = <0x0>;
		local-timer-stop;
		entry-latency-us = <1000>;
		exit-latency-us = <700>;
		min-residency-us = <2700>;
		};
		};
		};

		gic: interrupt-controller@2d400000 {