arm64: dts: qcom: sm7225-fairphone-fp4: Add pm7250b PMIC

The PM7250B is primarily used for charger and fuel gauge on Fairphone 4
but also has some thermal zones that we can configure already.
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220902111055.106814-3-luca.weiss@fairphone.com

arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts

@@ -12,6 +12,7 @@
 #include "sm7225.dtsi"
 #include "pm6150l.dtsi"
 #include "pm6350.dtsi"
+#include "pm7250b.dtsi"
 
 / {
 	model = "Fairphone 4";
@@ -70,6 +71,36 @@ memory@efe01000 {
 			qcom,vmid = <15>;
 		};
 	};
+
+	thermal-zones {
+		chg-skin-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+			thermal-sensors = <&pm7250b_adc_tm 0>;
+
+			trips {
+				active-config0 {
+					temperature = <125000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+			};
+		};
+
+		conn-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+			thermal-sensors = <&pm7250b_adc_tm 1>;
+
+			trips {
+				active-config0 {
+					temperature = <125000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+			};
+		};
+	};
 };
 
 &adsp {
@@ -353,6 +384,42 @@ &pm6350_resin {
 	linux,code = <KEY_VOLUMEDOWN>;
 };
 
+&pm7250b_adc {
+	adc-chan@4d {
+		reg = <ADC5_AMUX_THM1_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+		label = "charger_skin_therm";
+	};
+
+	adc-chan@4f {
+		reg = <ADC5_AMUX_THM3_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+		label = "conn_therm";
+	};
+};
+
+&pm7250b_adc_tm {
+	status = "okay";
+
+	charger-skin-therm@0 {
+		reg = <0>;
+		io-channels = <&pm7250b_adc ADC5_AMUX_THM1_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time-us = <200>;
+	};
+
+	conn-therm@1 {
+		reg = <1>;
+		io-channels = <&pm7250b_adc ADC5_AMUX_THM3_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time-us = <200>;
+	};
+};
+
 &qupv3_id_1 {
 	status = "okay";
 };