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authorManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>2022-11-03 12:58:10 +0300
committerBjorn Andersson <andersson@kernel.org>2022-11-07 06:11:11 +0300
commit31863c523ac5bd2b0fe0857c6405a7431c59d653 (patch)
treedea4c86a3927cc8434b2be2f348fd12b081afbee /arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
parent7c0151347401a55f98afa640f741f70e411ce685 (diff)
downloadlinux-31863c523ac5bd2b0fe0857c6405a7431c59d653.tar.xz
arm64: dts: qcom: sc8280xp-x13s: Add thermal zone support
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 throttled down to keep the temperature at a sane level. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org> Signed-off-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20221103095810.64606-13-manivannan.sadhasivam@linaro.org
Diffstat (limited to 'arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts')
-rw-r--r--arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts46
1 files changed, 46 insertions, 0 deletions
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 6d96f0b54880..66ca0136eb96 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 @@
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>;
+ 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";