Downstream defines four ADC channels related to thermal sensors external
to the PM8998 and two channels for internal voltage measurements.

Add these to the upstream SDM845 MTP, describe the thermal monitor
channels and add thermal_zones for these.

Signed-off-by: Bjorn Andersson <redacted>
---

In addition to the iio channels exposed by v1, Daniel wanted thermal_zones...

Changes since v1:
- Enable the pm8998_adc_tm and describe the ADC channels
- Add thermal-zones for the new channels

 arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 128 ++++++++++++++++++++++++
 1 file changed, 128 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
index 52dd7a858231..e3b40daef801 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts

@@ -10,6 +10,8 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 #include "sdm845.dtsi"
+#include "pm8998.dtsi"
+#include "pmi8998.dtsi"
 
 / {
 	model = "Qualcomm Technologies, Inc. SDM845 MTP";

@@ -46,6 +48,68 @@ vreg_s4a_1p8: pm8998-smps4 {
 
 		vin-supply = <&vph_pwr>;
 	};
+
+	thermal-zones {
+		xo_thermal: xo-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+
+			thermal-sensors = <&pm8998_adc_tm 1>;
+
+			trips {
+				trip-point {
+					temperature = <125000>;
+					hysteresis = <10000>;
+					type = "passive";
+				};
+			};
+		};
+
+		msm_thermal: msm-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+
+			thermal-sensors = <&pm8998_adc_tm 2>;
+
+			trips {
+				trip-point {
+					temperature = <125000>;
+					hysteresis = <10000>;
+					type = "passive";
+				};
+			};
+		};
+
+		pa_thermal: pa-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+
+			thermal-sensors = <&pm8998_adc_tm 3>;
+
+			trips {
+				trip-point {
+					temperature = <125000>;
+					hysteresis = <10000>;
+					type = "passive";
+				};
+			};
+		};
+
+		quiet_thermal: quiet-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+
+			thermal-sensors = <&pm8998_adc_tm 4>;
+
+			trips {
+				trip-point {
+					temperature = <125000>;
+					hysteresis = <10000>;
+					type = "passive";
+				};
+			};
+		};
+	};
 };
 
 &adsp_pas {

@@ -469,6 +533,70 @@ &mss_pil {
 	firmware-name = "qcom/sdm845/mba.mbn", "qcom/sdm845/modem.mbn";
 };
 
+&pm8998_adc {
+	adc-chan@4c {
+		reg = <ADC5_XO_THERM_100K_PU>;
+		label = "xo_therm";
+	};
+
+	adc-chan@4d {
+		reg = <ADC5_AMUX_THM1_100K_PU>;
+		label = "msm_therm";
+	};
+
+	adc-chan@4f {
+		reg = <ADC5_AMUX_THM3_100K_PU>;
+		label = "pa_therm1";
+	};
+
+	adc-chan@51 {
+		reg = <ADC5_AMUX_THM5_100K_PU>;
+		label = "quiet_therm";
+	};
+
+	adc-chan@83 {
+		reg = <ADC5_VPH_PWR>;
+		label = "vph_pwr";
+	};
+
+	adc-chan@85 {
+		reg = <ADC5_VCOIN>;
+		label = "vcoin";
+	};
+};
+
+&pm8998_adc_tm {
+	status = "okay";
+
+	xo-thermistor@1 {
+		reg = <1>;
+		io-channels = <&pm8998_adc ADC5_XO_THERM_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time-us = <200>;
+	};
+
+	msm-thermistor@2 {
+		reg = <2>;
+		io-channels = <&pm8998_adc ADC5_AMUX_THM1_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time-us = <200>;
+	};
+
+	pa-thermistor@3 {
+		reg = <3>;
+		io-channels = <&pm8998_adc ADC5_AMUX_THM3_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time-us = <200>;
+	};
+
+	quiet-thermistor@4 {
+		reg = <4>;
+		io-channels = <&pm8998_adc ADC5_AMUX_THM5_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time-us = <200>;
+	};
+};
+