[PATCH RFC v3 4/6] arm64: dts: qcom: sm8550-hdk: add SPMI ADC channels and thermal nodes

From: Neil Armstrong

Date: Mon Jun 15 2026 - 13:02:52 EST

Add the SPMI ADC channels on the PMK8550 SPMI5 ADC3 for the
other PMICS on the system.

The thermal nodes are sorted by the sensor channel to be
coherent with the system thermal nodes ordering.

Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sm8550-hdk.dts | 279 ++++++++++++++++++++++++++++++++
1 file changed, 279 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8550-hdk.dts b/arch/arm64/boot/dts/qcom/sm8550-hdk.dts
index ee13e6136a82..83cf48a623fc 100644
--- a/arch/arm64/boot/dts/qcom/sm8550-hdk.dts
+++ b/arch/arm64/boot/dts/qcom/sm8550-hdk.dts
@@ -16,6 +16,9 @@
#include "pm8550vs.dtsi"
#include "pmk8550.dtsi"
#include "pmr735d_a.dtsi"
+#include "qcom,pm8550-adc5-gen3.h"
+#include "qcom,pm8550b-adc5-gen3.h"
+#include "qcom,pm8550vx-adc5-gen3.h"

/ {
model = "Qualcomm Technologies, Inc. SM8550 HDK";
@@ -280,6 +283,92 @@ platform {
};
};

+ thermal-zones {
+ skin-thermal {
+ thermal-sensors = <&pmk8550_vadc PM8550_ADC5_GEN3_AMUX_THM1_100K_PU(1)>;
+
+ trips {
+ active-config0 {
+ temperature = <125000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+ };
+
+ cam-flash-thermal {
+ thermal-sensors = <&pmk8550_vadc PM8550_ADC5_GEN3_AMUX_THM2_100K_PU(1)>;
+
+ trips {
+ active-config0 {
+ temperature = <125000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+ };
+
+ wlan-thermal {
+ thermal-sensors = <&pmk8550_vadc PM8550_ADC5_GEN3_AMUX_THM3_100K_PU(1)>;
+
+ trips {
+ active-config0 {
+ temperature = <125000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+ };
+
+ pa-thermal {
+ thermal-sensors = <&pmk8550_vadc PM8550_ADC5_GEN3_AMUX_THM4_100K_PU(1)>;
+
+ trips {
+ active-config0 {
+ temperature = <125000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+ };
+
+ rear-tof-thermal {
+ thermal-sensors = <&pmk8550_vadc PM8550_ADC5_GEN3_AMUX_THM5_100K_PU(1)>;
+
+ trips {
+ active-config0 {
+ temperature = <125000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+ };
+
+ usb-thermal {
+ thermal-sensors = <&pmk8550_vadc PM8550B_ADC5_GEN3_AMUX_THM4_USB_THERM_100K_PU(7)>;
+
+ trips {
+ active-config0 {
+ temperature = <125000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+ };
+
+ wls-thermal {
+ thermal-sensors = <&pmk8550_vadc PM8550B_ADC5_GEN3_AMUX_THM6_GPIO10_100K_PU(7)>;
+
+ trips {
+ active-config0 {
+ temperature = <125000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+ };
+ };
+
wcn7850-pmu {
compatible = "qcom,wcn7850-pmu";

@@ -1102,27 +1191,217 @@ led@3 {
};
};

+&pm8550_temp_alarm {
+ io-channels = <&pmk8550_vadc PM8550_ADC5_GEN3_DIE_TEMP(1)>;
+ io-channel-names = "thermal";
+};
+
&pm8550b_eusb2_repeater {
vdd18-supply = <&vreg_l15b_1p8>;
vdd3-supply = <&vreg_l5b_3p1>;
};

+&pm8550b_temp_alarm {
+ io-channels = <&pmk8550_vadc PM8550B_ADC5_GEN3_DIE_TEMP(7)>;
+ io-channel-names = "thermal";
+};
+
&pm8550vs_c {
status = "okay";
};

+&pm8550vs_c_temp_alarm {
+ io-channels = <&pmk8550_vadc PM8550VS_ADC5_GEN3_DIE_TEMP(2)>;
+ io-channel-names = "thermal";
+};
+
&pm8550vs_d {
status = "okay";
};

+&pm8550vs_d_temp_alarm {
+ io-channels = <&pmk8550_vadc PM8550VS_ADC5_GEN3_DIE_TEMP(3)>;
+ io-channel-names = "thermal";
+};
+
&pm8550vs_e {
status = "okay";
};

+&pm8550vs_e_temp_alarm {
+ io-channels = <&pmk8550_vadc PM8550VS_ADC5_GEN3_DIE_TEMP(4)>;
+ io-channel-names = "thermal";
+};
+
&pm8550vs_g {
status = "okay";
};

+&pm8550vs_g_temp_alarm {
+ io-channels = <&pmk8550_vadc PM8550VS_ADC5_GEN3_DIE_TEMP(6)>;
+ io-channel-names = "thermal";
+};
+
+&pm8550ve_temp_alarm {
+ io-channels = <&pmk8550_vadc PM8550VE_ADC5_GEN3_DIE_TEMP(PMK8550VE_SID)>;
+ io-channel-names = "thermal";
+};
+
+&pmk8550_vadc {
+ /* PM8550 Channel nodes */
+ channel@100 {
+ reg = <PM8550_ADC5_GEN3_REF_GND(1)>;
+ label = "pm8550_offset_ref";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ channel@101 {
+ reg = <PM8550_ADC5_GEN3_1P25VREF(1)>;
+ label = "pm8550_vref_1p25";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ channel@103 {
+ reg = <PM8550_ADC5_GEN3_DIE_TEMP(1)>;
+ label = "pm8550_die_temp";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ channel@18e {
+ reg = <PM8550_ADC5_GEN3_VPH_PWR(1)>;
+ label = "pm8550_vph_pwr";
+ qcom,pre-scaling = <1 3>;
+ };
+
+ channel@144 {
+ reg = <PM8550_ADC5_GEN3_AMUX_THM1_100K_PU(1)>;
+ label = "pm8550_msm_therm";
+ qcom,ratiometric;
+ qcom,hw-settle-time = <200>;
+ qcom,pre-scaling = <1 1>;
+ qcom,adc-tm;
+ };
+
+ channel@145 {
+ reg = <PM8550_ADC5_GEN3_AMUX_THM2_100K_PU(1)>;
+ label = "pm8550_cam_flash_therm";
+ qcom,ratiometric;
+ qcom,hw-settle-time = <200>;
+ qcom,pre-scaling = <1 1>;
+ qcom,adc-tm;
+ };
+
+ channel@146 {
+ reg = <PM8550_ADC5_GEN3_AMUX_THM3_100K_PU(1)>;
+ label = "pm8550_wlan_therm";
+ qcom,ratiometric;
+ qcom,hw-settle-time = <200>;
+ qcom,pre-scaling = <1 1>;
+ qcom,adc-tm;
+ };
+
+ channel@147 {
+ reg = <PM8550_ADC5_GEN3_AMUX_THM4_100K_PU(1)>;
+ label = "pm8550_pa_therm_1";
+ qcom,ratiometric;
+ qcom,hw-settle-time = <200>;
+ qcom,pre-scaling = <1 1>;
+ qcom,adc-tm;
+ };
+
+ channel@148 {
+ reg = <PM8550_ADC5_GEN3_AMUX_THM5_100K_PU(1)>;
+ label = "pm8550_rear_tof_therm";
+ qcom,ratiometric;
+ qcom,hw-settle-time = <200>;
+ qcom,pre-scaling = <1 1>;
+ qcom,adc-tm;
+ };
+
+ /* PM8550VS_C Channel nodes */
+ channel@203 {
+ reg = <PM8550VS_ADC5_GEN3_DIE_TEMP(2)>;
+ label = "pm8550vs_c_die_temp";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ /* PM8550VS_D Channel nodes */
+ channel@303 {
+ reg = <PM8550VS_ADC5_GEN3_DIE_TEMP(3)>;
+ label = "pm8550vs_d_die_temp";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ /* PM8550VS_E Channel nodes */
+ channel@403 {
+ reg = <PM8550VS_ADC5_GEN3_DIE_TEMP(4)>;
+ label = "pm8550vs_e_die_temp";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ /* PM8550VE Channel nodes */
+ channel@503 {
+ reg = <PM8550VE_ADC5_GEN3_DIE_TEMP(PMK8550VE_SID)>;
+ label = "pm8550ve_die_temp";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ /* PM8550VS_G Channel nodes */
+ channel@603 {
+ reg = <PM8550VS_ADC5_GEN3_DIE_TEMP(6)>;
+ label = "pm8550vs_g_die_temp";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ /* PM8550B Channel nodes */
+ channel@700 {
+ reg = <PM8550B_ADC5_GEN3_REF_GND(7)>;
+ label = "pm8550b_offset_ref";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ channel@701 {
+ reg = <PM8550B_ADC5_GEN3_1P25VREF(7)>;
+ label = "pm8550b_vref_1p25";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ channel@703 {
+ reg = <PM8550B_ADC5_GEN3_DIE_TEMP(7)>;
+ label = "pm8550b_die_temp";
+ qcom,pre-scaling = <1 1>;
+ };
+
+ channel@78e {
+ reg = <PM8550B_ADC5_GEN3_VPH_PWR(7)>;
+ label = "pm8550b_vph_pwr";
+ qcom,pre-scaling = <1 3>;
+ };
+
+ channel@78f {
+ reg = <PM8550B_ADC5_GEN3_VBAT_SNS_QBG(7)>;
+ label = "pm8550b_vbat_sns_qbg";
+ qcom,pre-scaling = <1 6>;
+ };
+
+ channel@747 {
+ reg = <PM8550B_ADC5_GEN3_AMUX_THM4_USB_THERM_100K_PU(7)>;
+ label = "pm8550b_usb_therm";
+ qcom,ratiometric;
+ qcom,hw-settle-time = <200>;
+ qcom,pre-scaling = <1 1>;
+ qcom,adc-tm;
+ };
+
+ channel@749 {
+ reg = <PM8550B_ADC5_GEN3_AMUX_THM6_GPIO10_100K_PU(7)>;
+ label = "pm8550b_wls_therm";
+ qcom,ratiometric;
+ qcom,pre-scaling = <1 1>;
+ qcom,adc-tm;
+ };
+};
+
&pon_pwrkey {
status = "okay";
};

--
2.34.1