Add CPU idle state nodes to enable C1/C2 idle states. Signed-off-by: James Liao <jamesjj.liao@xxxxxxxxxxxx> --- This patch bases on latest Matthias v4.13-next/dts64 branch [1], add CPU idle states for MT2712. [1] https://github.com/mbgg/linux-mediatek.git arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi index 57d0396..5d4e406 100644 --- a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi @@ -39,6 +39,7 @@ device_type = "cpu"; compatible = "arm,cortex-a35"; reg = <0x000>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; cpu1: cpu@1 { @@ -46,6 +47,7 @@ compatible = "arm,cortex-a35"; reg = <0x001>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; cpu2: cpu@200 { @@ -53,6 +55,29 @@ compatible = "arm,cortex-a72"; reg = <0x200>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; + }; + + idle-states { + entry-method = "arm,psci"; + + CPU_SLEEP_0: cpu-sleep-0 { + compatible = "arm,idle-state"; + local-timer-stop; + entry-latency-us = <100>; + exit-latency-us = <80>; + min-residency-us = <2000>; + arm,psci-suspend-param = <0x0010000>; + }; + + CLUSTER_SLEEP_0: cluster-sleep-0 { + compatible = "arm,idle-state"; + local-timer-stop; + entry-latency-us = <350>; + exit-latency-us = <80>; + min-residency-us = <3000>; + arm,psci-suspend-param = <0x1010000>; + }; }; }; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
