linux-kernel - Re: [PATCH v2 1/4] arm64: dts: mediatek: cherry: Add platform thermal configuration

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Date:   Tue, 25 Apr 2023 13:46:42 +0200
From:   Alexandre Mergnat <amergnat@...libre.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>, matthias.bgg@...il.com
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, kernel@...labora.com,
        Chen-Yu Tsai <wenst@...omium.org>
Subject: Re: [PATCH v2 1/4] arm64: dts: mediatek: cherry: Add platform thermal
 configuration

On 24/04/2023 13:25, AngeloGioacchino Del Regno wrote:
> This platform has three auxiliary NTC thermistors, connected to the
> SoC's ADC pins. Enable the auxadc in order to be able to read the
> ADC values, add a generic-adc-thermal LUT for each and finally assign
> them to the SoC's thermal zones.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> Tested-by: Chen-Yu Tsai <wenst@...omium.org>
> Reviewed-by: Chen-Yu Tsai <wenst@...omium.org>
> ---
>   .../boot/dts/mediatek/mt8195-cherry.dtsi      | 105 ++++++++++++++++++
>   1 file changed, 105 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> index 8ac80a136c37..4229f4f7dc2f 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> @@ -114,6 +114,77 @@ ppvar_sys: regulator-ppvar-sys {
>   		regulator-boot-on;
>   	};
>   
> +	/* Murata NCP03WF104F05RL */
> +	tboard_thermistor1: thermal-sensor-t1 {
> +		compatible = "generic-adc-thermal";
> +		#thermal-sensor-cells = <0>;
> +		io-channels = <&auxadc 0>;
> +		io-channel-names = "sensor-channel";
> +		temperature-lookup-table = <	(-10000) 1553
> +						(-5000) 1485
> +						0 1406
> +						5000 1317
> +						10000 1219
> +						15000 1115
> +						20000 1007
> +						25000 900
> +						30000 796
> +						35000 697
> +						40000 605
> +						45000 523
> +						50000 449
> +						55000 384
> +						60000 327
> +						65000 279
> +						70000 237
> +						75000 202
> +						80000 172
> +						85000 147
> +						90000 125
> +						95000 107
> +						100000 92
> +						105000 79
> +						110000 68
> +						115000 59
> +						120000 51
> +						125000 44>;
> +	};
> +
> +	tboard_thermistor2: thermal-sensor-t2 {
> +		compatible = "generic-adc-thermal";
> +		#thermal-sensor-cells = <0>;
> +		io-channels = <&auxadc 1>;
> +		io-channel-names = "sensor-channel";
> +		temperature-lookup-table = <	(-10000) 1553
> +						(-5000) 1485
> +						0 1406
> +						5000 1317
> +						10000 1219
> +						15000 1115
> +						20000 1007
> +						25000 900
> +						30000 796
> +						35000 697
> +						40000 605
> +						45000 523
> +						50000 449
> +						55000 384
> +						60000 327
> +						65000 279
> +						70000 237
> +						75000 202
> +						80000 172
> +						85000 147
> +						90000 125
> +						95000 107
> +						100000 92
> +						105000 79
> +						110000 68
> +						115000 59
> +						120000 51
> +						125000 44>;
> +	};
> +
>   	usb_vbus: regulator-5v0-usb-vbus {
>   		compatible = "regulator-fixed";
>   		regulator-name = "usb-vbus";
> @@ -260,6 +331,10 @@ &gpu {
>   	mali-supply = <&mt6315_7_vbuck1>;
>   };
>   
> +&auxadc {

Can you put it in alphabetical order please. ?

> +	status = "okay";
> +};
> +
>   &i2c0 {
>   	status = "okay";
>   
> @@ -1098,6 +1173,36 @@ mt6315_7_vbuck1: vbuck1 {
>   	};
>   };
>   
> +&thermal_zones {
> +	soc-area-thermal {
> +		polling-delay = <1000>;
> +		polling-delay-passive = <250>;
> +		thermal-sensors = <&tboard_thermistor1>;
> +
> +		trips {
> +			trip-crit {
> +				temperature = <84000>;
> +				hysteresis = <1000>;
> +				type = "critical";
> +			};
> +		};
> +	};
> +
> +	pmic-area-thermal {
> +		polling-delay = <1000>;
> +		polling-delay-passive = <0>;
> +		thermal-sensors = <&tboard_thermistor2>;
> +
> +		trips {
> +			trip-crit {
> +				temperature = <84000>;
> +				hysteresis = <1000>;
> +				type = "critical";
> +			};
> +		};
> +	};
> +};
> +
>   &u3phy0 {
>   	status = "okay";
>   };

After that:
Reviewed-by: Alexandre Mergnat <amergnat@...libre.com>

Regards,
Alexandre