Commit 6f4ec884 authored by Anson Huang's avatar Anson Huang Committed by Shawn Guo
Browse files

ARM: dts: imx7s: enable cpuidle driver 



Enable cpuidle for i.MX7S/D using generic ARM cpuidle
driver, below 2 idle states enabled:

1. ARM WFI;
2. SoC WAIT mode.

Signed-off-by: default avatarAnson Huang <Anson.Huang@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent f5d5d2e6

arch/arm/boot/dts/imx7d.dtsi

+1 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ cpu1: cpu@1 { 
			reg = <1>;

			clock-frequency = <996000000>;

			operating-points-v2 = <&cpu0_opp_table>;

			cpu-idle-states = <&cpu_sleep_wait>;

		};

	};

arch/arm/boot/dts/imx7s.dtsi

+14 −0
Original line number Diff line number Diff line
@@ -54,6 +54,19 @@ cpus { 
		#address-cells = <1>;

		#size-cells = <0>;



		idle-states {

			entry-method = "psci";



			cpu_sleep_wait: cpu-sleep-wait {

				compatible = "arm,idle-state";

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

				local-timer-stop;

				entry-latency-us = <100>;

				exit-latency-us = <50>;

				min-residency-us = <1000>;

			};

		};



		cpu0: cpu@0 {

			compatible = "arm,cortex-a7";

			device_type = "cpu";
@@ -61,6 +74,7 @@ cpu0: cpu@0 { 
			clock-frequency = <792000000>;

			clock-latency = <61036>; /* two CLK32 periods */

			clocks = <&clks IMX7D_CLK_ARM>;

			cpu-idle-states = <&cpu_sleep_wait>;

		};

	};