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| author | Anson Huang <Anson.Huang@nxp.com> | 2018-09-03 09:45:41 +0800 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2018-09-03 12:30:43 +0800 |
| commit | 6f4ec8842dd2b634c8811956ca0dcbacd75de06b (patch) | |
| tree | 2bf564e9cf3c38d1ac3e025fb675a3847af46469 /arch/arm/boot/dts/imx7s.dtsi | |
| parent | f5d5d2e6c6490e8245ca704f1d3d0295161d78f5 (diff) | |
| download | lwn-6f4ec8842dd2b634c8811956ca0dcbacd75de06b.tar.gz lwn-6f4ec8842dd2b634c8811956ca0dcbacd75de06b.zip | |
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: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/boot/dts/imx7s.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/imx7s.dtsi | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi index 93884ceea735..d3f64882f861 100644 --- a/arch/arm/boot/dts/imx7s.dtsi +++ b/arch/arm/boot/dts/imx7s.dtsi @@ -54,6 +54,19 @@ #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 @@ clock-frequency = <792000000>; clock-latency = <61036>; /* two CLK32 periods */ clocks = <&clks IMX7D_CLK_ARM>; + cpu-idle-states = <&cpu_sleep_wait>; }; }; |