On 29.10.2022 07:14, Manivannan Sadhasivam wrote:
> Add thermal zone support by making use of the thermistor SYS_THERM6.
> Based on experiments, this thermistor seems to reflect the actual
> surface temperature of the laptop.
>
> For the cooling device, all BIG CPU cores are throttle down to keep the
s/throttle/throttled
Is it okay to let the 4xA78C run at full throttle in thermal emergencies though?
> temperature at a sane level.
>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
> ---
> .../qcom/sc8280xp-lenovo-thinkpad-x13s.dts | 46 +++++++++++++++++++
> 1 file changed, 46 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> index ca77c19c6d0d..96e2fa72f782 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> @@ -29,6 +29,52 @@ backlight {
> pinctrl-0 = <&edp_bl_en>, <&edp_bl_pwm>;
> };
>
> + thermal-zones {
> + skin-temp-thermal {
> + polling-delay-passive = <250>;
> + polling-delay = <0>;
> + thermal-sensors = <&pmk8280_adc_tm 5>;
> +
> + trips {
> + skin_temp_alert0: trip-point0 {
> + temperature = <55000>;
> + hysteresis = <1000>;
> + type = "passive";
> + };
> +
> + skin_temp_alert1: trip-point1 {
> + temperature = <58000>;
> + hysteresis = <1000>;
> + type = "passive";
> + };
> +
> + skin-temp-crit {
> + temperature = <73000>;
Ouch, I didn't know we were serving burnt fingers at the cafeteria today :D
Or maybe this just looks scary.. The laptop looks plastic, so maybe it won't cause instant
burns?
Konrad
> + hysteresis = <1000>;
> + type = "critical";
> + };
> + };
> +
> + cooling-maps {
> + map0 {
> + trip = <&skin_temp_alert0>;
> + cooling-device = <&CPU4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&CPU5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&CPU6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&CPU7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> + };
> +
> + map1 {
> + trip = <&skin_temp_alert1>;
> + cooling-device = <&CPU4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&CPU5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&CPU6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> + <&CPU7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> + };
> + };
> + };
> + };
> +
> vreg_edp_bl: regulator-edp-bl {
> compatible = "regulator-fixed";
>
