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Message-ID: <CAGXv+5GuEQMxYTKrnia1ipYHLt_B2h6By7EejE7MjCypfavnFg@mail.gmail.com>
Date: Fri, 21 Apr 2023 15:37:52 +0800
From: Chen-Yu Tsai <wenst@...omium.org>
To: AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
Cc: matthias.bgg@...il.com, 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
Subject: Re: [PATCH 1/5] arm64: dts: mediatek: cherry: Add platform thermal configuration
On Thu, Apr 20, 2023 at 5:45 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com> 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>
> ---
> .../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..0820e9ba3829 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 {
> + status = "okay";
> +};
> +
> &i2c0 {
> status = "okay";
>
> @@ -1098,6 +1173,36 @@ mt6315_7_vbuck1: vbuck1 {
> };
> };
>
> +&thermal_zones {
> + soc_area_ntc {
> + polling-delay = <1000>;
> + polling-delay-passive = <250>;
> + thermal-sensors = <&tboard_thermistor1>;
> +
> + trips {
> + trip-crit {
> + temperature = <95000>;
> + hysteresis = <2000>;
> + type = "critical";
> + };
> + };
> + };
> +
> + pmic_area_ntc {
> + polling-delay = <1000>;
> + polling-delay-passive = <0>;
> + thermal-sensors = <&tboard_thermistor2>;
> +
> + trips {
> + trip-crit {
> + temperature = <95000>;
> + hysteresis = <2000>;
> + type = "critical";
> + };
> + };
> + };
I'm still getting:
thermal_sys: Failed to find 'trips' node
thermal_sys: Failed to find trip points for thermal-sensor-t1 id=0
generic-adc-thermal thermal-sensor-t1: Thermal zone sensor register failed: -22
generic-adc-thermal: probe of thermal-sensor-t1 failed with error -22
thermal_sys: Failed to find 'trips' node
thermal_sys: Failed to find trip points for thermal-sensor-t2 id=0
generic-adc-thermal thermal-sensor-t2: Thermal zone sensor register failed: -22
generic-adc-thermal: probe of thermal-sensor-t2 failed with error -22
thermal_sys: Failed to find 'trips' node
thermal_sys: Failed to find trip points for thermal-sensor-t3 id=0
generic-adc-thermal thermal-sensor-t3: Thermal zone sensor register failed: -22
generic-adc-thermal: probe of thermal-sensor-t3 failed with error -22
> +};
> +
> &u3phy0 {
> status = "okay";
> };
> --
> 2.40.0
>
>
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