Add idle states for cpu-off and cluster-off. Signed-off-by: James Liao <jamesjj.l...@mediatek.com> --- arch/arm64/boot/dts/mediatek/mt8192.dtsi | 44 ++++++++++++++++++++++++ 1 file changed, 44 insertions(+)
This patch bases on v5.10 and [1], adds idle-states for MT8192 CPUs. [1] https://lore.kernel.org/linux-arm-kernel/20201030092207.26488-2-seiya.w...@mediatek.com/ diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi index e12e024de122..c7f2ec9ea4f1 100644 --- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi @@ -39,6 +39,7 @@ reg = <0x000>; enable-method = "psci"; clock-frequency = <1701000000>; + cpu-idle-states = <&cpuoff_l &clusteroff_l>; next-level-cache = <&l2_0>; capacity-dmips-mhz = <530>; }; @@ -49,6 +50,7 @@ reg = <0x100>; enable-method = "psci"; clock-frequency = <1701000000>; + cpu-idle-states = <&cpuoff_l &clusteroff_l>; next-level-cache = <&l2_0>; capacity-dmips-mhz = <530>; }; @@ -59,6 +61,7 @@ reg = <0x200>; enable-method = "psci"; clock-frequency = <1701000000>; + cpu-idle-states = <&cpuoff_l &clusteroff_l>; next-level-cache = <&l2_0>; capacity-dmips-mhz = <530>; }; @@ -69,6 +72,7 @@ reg = <0x300>; enable-method = "psci"; clock-frequency = <1701000000>; + cpu-idle-states = <&cpuoff_l &clusteroff_l>; next-level-cache = <&l2_0>; capacity-dmips-mhz = <530>; }; @@ -79,6 +83,7 @@ reg = <0x400>; enable-method = "psci"; clock-frequency = <2171000000>; + cpu-idle-states = <&cpuoff_b &clusteroff_b>; next-level-cache = <&l2_1>; capacity-dmips-mhz = <1024>; }; @@ -89,6 +94,7 @@ reg = <0x500>; enable-method = "psci"; clock-frequency = <2171000000>; + cpu-idle-states = <&cpuoff_b &clusteroff_b>; next-level-cache = <&l2_1>; capacity-dmips-mhz = <1024>; }; @@ -99,6 +105,7 @@ reg = <0x600>; enable-method = "psci"; clock-frequency = <2171000000>; + cpu-idle-states = <&cpuoff_b &clusteroff_b>; next-level-cache = <&l2_1>; capacity-dmips-mhz = <1024>; }; @@ -109,6 +116,7 @@ reg = <0x700>; enable-method = "psci"; clock-frequency = <2171000000>; + cpu-idle-states = <&cpuoff_b &clusteroff_b>; next-level-cache = <&l2_1>; capacity-dmips-mhz = <1024>; }; @@ -158,6 +166,42 @@ l3_0: l3-cache { compatible = "cache"; }; + + idle-states { + entry-method = "arm,psci"; + cpuoff_l: cpuoff_l { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x00010001>; + local-timer-stop; + entry-latency-us = <55>; + exit-latency-us = <140>; + min-residency-us = <780>; + }; + cpuoff_b: cpuoff_b { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x00010001>; + local-timer-stop; + entry-latency-us = <35>; + exit-latency-us = <145>; + min-residency-us = <720>; + }; + clusteroff_l: clusteroff_l { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x01010002>; + local-timer-stop; + entry-latency-us = <60>; + exit-latency-us = <155>; + min-residency-us = <860>; + }; + clusteroff_b: clusteroff_b { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x01010002>; + local-timer-stop; + entry-latency-us = <40>; + exit-latency-us = <155>; + min-residency-us = <780>; + }; + }; }; pmu-a55 { -- 2.18.0
