From f3b2e426f0f6506d8bdf4f0c7707656ac4624a59 Mon Sep 17 00:00:00 2001
From: Dhruvin Rajpura <drajpura@qti.qualcomm.com>
Date: Wed, 23 Sep 2026 16:54:17 +0530
Subject: [PATCH] PENDING: arm64: dts: qcom: nord: add ADC-TM thermistor
 channels for Nord PMICs

PMAU0102 (Kai_MV) and PMM8650AU's Kobra_MM ADC5 Gen3 controllers only
expose REF_GND/1P25VREF/DIE_TEMP calibration channels; none of their
AMUX thermistor pins are wired up, so none of the board thermistor
rails feed the thermal framework.

Only 3 AMUX pins are actually wired to thermistors on Nord, all on
Kai and none on Kobra: Kai instance E's AMUX1 (SDRAM3 THERM) and Kai
instance I's AMUX1/AMUX2 (SDRAM1 THERM, UFS THERM). Kai's other AMUX
pins are either DO_NOT_USE or wired to voltage-rail monitors, not
thermistors, so add only these 3 channels.

Add #thermal-sensor-cells = <1> to the two Kai adc@ nodes that gain
a channel, the new AMUX1[/AMUX2]_THM channel(s) with qcom,adc-tm,
and a per-channel thermal-zone for each, following the existing
Gen3/Gen4 board pattern of a direct thermal-sensors phandle into the
ADC channel.

Signed-off-by: Dhruvin Rajpura <drajpura@qti.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/pmau0102-nord.dtsi | 80 +++++++++++++++++++++
 1 file changed, 80 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/pmau0102-nord.dtsi b/arch/arm64/boot/dts/qcom/pmau0102-nord.dtsi
index 426423b8ed011..a03e5968520ef 100644
--- a/arch/arm64/boot/dts/qcom/pmau0102-nord.dtsi
+++ b/arch/arm64/boot/dts/qcom/pmau0102-nord.dtsi
@@ -30,6 +30,7 @@
 			#size-cells = <0>;
 			interrupts-extended = <&spmi_bus 0x4 0x72 0x1 IRQ_TYPE_EDGE_RISING>;
 			#io-channel-cells = <1>;
+			#thermal-sensor-cells = <1>;
 
 			channel@400 {
 				reg = <ADC5_GEN3_REF_GND(4)>;
@@ -48,6 +49,14 @@
 				label = "pmau0102_e_die_temp";
 				qcom,pre-scaling = <1 1>;
 			};
+
+			channel@444 {
+				reg = <ADC5_GEN3_AMUX1_THM_100K_PU(4)>;
+				label = "pmau0102_e_sdram3_therm";
+				qcom,ratiometric;
+				qcom,hw-settle-time = <200>;
+				qcom,adc-tm;
+			};
 		};
 
 		pmau0102_e_gpios: gpio@8800 {
@@ -242,6 +251,7 @@
 			#size-cells = <0>;
 			interrupts-extended = <&spmi_bus 0x8 0x72 0x1 IRQ_TYPE_EDGE_RISING>;
 			#io-channel-cells = <1>;
+			#thermal-sensor-cells = <1>;
 
 			channel@800 {
 				reg = <ADC5_GEN3_REF_GND(8)>;
@@ -260,6 +270,22 @@
 				label = "pmau0102_i_die_temp";
 				qcom,pre-scaling = <1 1>;
 			};
+
+			channel@844 {
+				reg = <ADC5_GEN3_AMUX1_THM_100K_PU(8)>;
+				label = "pmau0102_i_sdram1_therm";
+				qcom,ratiometric;
+				qcom,hw-settle-time = <200>;
+				qcom,adc-tm;
+			};
+
+			channel@845 {
+				reg = <ADC5_GEN3_AMUX2_THM_100K_PU(8)>;
+				label = "pmau0102_i_ufs_therm";
+				qcom,ratiometric;
+				qcom,hw-settle-time = <200>;
+				qcom,adc-tm;
+			};
 		};
 
 		pmau0102_i_gpios: gpio@8800 {
@@ -447,6 +473,24 @@
 			};
 		};
 
+		pmau0102_e_sdram3_thermal: pm-e-sdram3-thermal {
+			thermal-sensors = <&pmau0102_e_adc ADC5_GEN3_AMUX1_THM_100K_PU(4)>;
+
+			trips {
+				trip0 {
+					temperature = <70000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+
+				trip1 {
+					temperature = <90000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+			};
+		};
+
 		pmau0102_f_thermal: pmau0102-f-thermal {
 			polling-delay-passive = <100>;
 			thermal-sensors = <&pmau0102_f_mbg_temp>;
@@ -495,6 +539,42 @@
 			};
 		};
 
+		pmau0102_i_sdram1_thermal: pm-i-sdram1-thermal {
+			thermal-sensors = <&pmau0102_i_adc ADC5_GEN3_AMUX1_THM_100K_PU(8)>;
+
+			trips {
+				trip0 {
+					temperature = <70000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+
+				trip1 {
+					temperature = <90000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+			};
+		};
+
+		pmau0102_i_ufs_thermal: pm-i-ufs-thermal {
+			thermal-sensors = <&pmau0102_i_adc ADC5_GEN3_AMUX2_THM_100K_PU(8)>;
+
+			trips {
+				trip0 {
+					temperature = <70000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+
+				trip1 {
+					temperature = <90000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+			};
+		};
+
 		pmau0102_j_thermal: pmau0102-j-thermal {
 			polling-delay-passive = <100>;
 			thermal-sensors = <&pmau0102_j_mbg_temp>;