diff options
| author | Chen-Yu Tsai <wens@csie.org> | 2020-07-17 19:00:50 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2020-07-20 16:30:06 +0300 |
| commit | d04f7bc8842c0d9951a5740480f864a4f82d6b63 (patch) | |
| tree | 84fe7360189a404c72d32c55b6135c7e3181e9d0 /arch/arm64 | |
| parent | 5fa21c1354c93cb9fe8239545b17eee46e39dd69 (diff) | |
| download | linux-d04f7bc8842c0d9951a5740480f864a4f82d6b63.tar.xz | |
arm64: dts: allwinner: h5: Add trip and cooling maps to CPU thermal zones
This enables passive cooling by down-regulating CPU voltage and frequency.
The trip points were copied from the H3.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200717160053.31191-6-wens@kernel.org
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi index 09523f6011c5..6735e316a39c 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi @@ -3,6 +3,8 @@ #include <arm/sunxi-h3-h5.dtsi> +#include <dt-bindings/thermal/thermal.h> + / { cpus { #address-cells = <1>; @@ -15,6 +17,7 @@ enable-method = "psci"; clocks = <&ccu CLK_CPUX>; clock-latency-ns = <244144>; /* 8 32k periods */ + #cooling-cells = <2>; }; cpu1: cpu@1 { @@ -24,6 +27,7 @@ enable-method = "psci"; clocks = <&ccu CLK_CPUX>; clock-latency-ns = <244144>; /* 8 32k periods */ + #cooling-cells = <2>; }; cpu2: cpu@2 { @@ -33,6 +37,7 @@ enable-method = "psci"; clocks = <&ccu CLK_CPUX>; clock-latency-ns = <244144>; /* 8 32k periods */ + #cooling-cells = <2>; }; cpu3: cpu@3 { @@ -42,6 +47,7 @@ enable-method = "psci"; clocks = <&ccu CLK_CPUX>; clock-latency-ns = <244144>; /* 8 32k periods */ + #cooling-cells = <2>; }; }; @@ -173,6 +179,30 @@ polling-delay-passive = <0>; polling-delay = <0>; thermal-sensors = <&ths 0>; + + trips { + cpu_hot_trip: cpu-hot { + temperature = <80000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu_very_hot_trip: cpu-very-hot { + temperature = <100000>; + hysteresis = <0>; + type = "critical"; + }; + }; + + cooling-maps { + cpu-hot-limit { + trip = <&cpu_hot_trip>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; }; gpu_thermal { |