From: Thierry Reding <[email protected]> Enable these thermal zones to be able to monitor their temperatures and control the fan to cool down the system if necessary.
Signed-off-by: Thierry Reding <[email protected]> --- .../boot/dts/nvidia/tegra194-p2972-0000.dts | 91 ++++++++++++++++++- 1 file changed, 90 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts index cbae8e8b1281..e29f8f6117c8 100644 --- a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts +++ b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts @@ -43,8 +43,97 @@ }; }; - fan { + fan: fan { compatible = "pwm-fan"; pwms = <&pwm4 0 45334>; + + cooling-levels = <0 64 128 255>; + cooling-min-state = <0>; + cooling-max-state = <3>; + #cooling-cells = <2>; + }; + + thermal-zones { + cpu { + polling-delay = <0>; + polling-delay-passive = <500>; + status = "okay"; + + trips { + cpu_trip_critical: critical { + temperature = <96500>; + hysteresis = <0>; + type = "critical"; + }; + + cpu_trip_hot: hot { + temperature = <70000>; + hysteresis = <2000>; + type = "hot"; + }; + + cpu_trip_active: active { + temperature = <50000>; + hysteresis = <2000>; + type = "active"; + }; + + cpu_trip_passive: passive { + temperature = <30000>; + hysteresis = <2000>; + type = "passive"; + }; + }; + + cooling-maps { + cpu-critical { + cooling-device = <&fan 3 3>; + trip = <&cpu_trip_critical>; + }; + + cpu-hot { + cooling-device = <&fan 2 2>; + trip = <&cpu_trip_hot>; + }; + + cpu-active { + cooling-device = <&fan 1 1>; + trip = <&cpu_trip_active>; + }; + + cpu-passive { + cooling-device = <&fan 0 0>; + trip = <&cpu_trip_passive>; + }; + }; + }; + + gpu { + polling-delay = <0>; + polling-delay-passive = <500>; + status = "okay"; + + trips { + gpu_alert0: critical { + temperature = <99000>; + hysteresis = <0>; + type = "critical"; + }; + }; + }; + + aux { + polling-delay = <0>; + polling-delay-passive = <500>; + status = "okay"; + + trips { + aux_alert0: critical { + temperature = <90000>; + hysteresis = <0>; + type = "critical"; + }; + }; + }; }; }; -- 2.19.1
