linux-kernel - Re: [PATCH 3/3] arm64: tegra: p2972: Enable the CPU, GPU and AUX thermal zones

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Date:   Sat, 15 Dec 2018 09:28:54 -0800
From:   Eduardo Valentin <edubezval@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>
Cc:     Jon Hunter <jonathanh@...dia.com>,
        Mikko Perttunen <mperttunen@...dia.com>,
        Rob Herring <robh+dt@...nel.org>, linux-tegra@...r.kernel.org,
        devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] arm64: tegra: p2972: Enable the CPU, GPU and AUX
 thermal zones

On Fri, Nov 23, 2018 at 01:18:39PM +0100, Thierry Reding wrote:
> From: Thierry Reding <treding@...dia.com>
> 
> 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 <treding@...dia.com>

Acked-by: Eduardo Valentin <edubezval@...il.com>

As mentioned, I already added patch 1.

> ---
>  .../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";
> +				};
> +			};
> +		};
>  	};
>  };