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| author | Ondrej Jirman <megous@megous.com> | 2020-04-20 16:00:14 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2020-04-23 12:35:29 +0300 |
| commit | 9f8a93b742e99dd93ca888161909e7245f1c7269 (patch) | |
| tree | 8209f9d0d5092a1e1fcea7d45e8a92fa23d8fb37 | |
| parent | 8a3a9535189d908f7e325238c9f09069d4fe9b8f (diff) | |
| download | linux-9f8a93b742e99dd93ca888161909e7245f1c7269.tar.xz | |
arm64: dts: allwinner: h6: Add thermal trip points/cooling map
This enables passive cooling by down-regulating CPU voltage
and frequency.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
| -rw-r--r-- | arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi index 370e77b86fe1..7cd10e4a5e2e 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi @@ -27,6 +27,7 @@ enable-method = "psci"; clocks = <&ccu CLK_CPUX>; clock-latency-ns = <244144>; /* 8 32k periods */ + #cooling-cells = <2>; }; cpu1: cpu@1 { @@ -36,6 +37,7 @@ enable-method = "psci"; clocks = <&ccu CLK_CPUX>; clock-latency-ns = <244144>; /* 8 32k periods */ + #cooling-cells = <2>; }; cpu2: cpu@2 { @@ -45,6 +47,7 @@ enable-method = "psci"; clocks = <&ccu CLK_CPUX>; clock-latency-ns = <244144>; /* 8 32k periods */ + #cooling-cells = <2>; }; cpu3: cpu@3 { @@ -54,6 +57,7 @@ enable-method = "psci"; clocks = <&ccu CLK_CPUX>; clock-latency-ns = <244144>; /* 8 32k periods */ + #cooling-cells = <2>; }; }; @@ -964,6 +968,30 @@ polling-delay-passive = <0>; polling-delay = <0>; thermal-sensors = <&ths 0>; + + trips { + cpu_alert: cpu-alert { + temperature = <85000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu-crit { + temperature = <100000>; + hysteresis = <0>; + type = "critical"; + }; + }; + + cooling-maps { + map0 { + trip = <&cpu_alert>; + 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 { |