[PATCH v2 0/4] arm64: dts: qcom: Add PMIC thermal support for Shikra platforms

[PATCH v2 0/4] arm64: dts: qcom: Add PMIC thermal support for Shikra platforms

[Jishnu Prakash]

This series adds the following:
- VADC and temp-alarm devices for PM4125 and temp-alarm device for PM8005
  which are used for thermal mitigation on Shikra CQ2390M SoM platform
- ADC thermistor channels and thermal configurations for same on Shikra CQ2390M SoM
- ADC thermistor channels and their thermal configurations on Shikra IQ2390S SoM

Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
---
Changes in v2:
- Move thermal zones to their respective PMIC files (PM4125, PM8005) as suggested by Dmitry Baryshkov
- Rename generic-adc-thermal bridge nodes to therm-bridge suffix (msm-therm-bridge, pa-therm-bridge,
  quiet-therm-bridge) as suggested by Dmitry Baryshkov
- Update commit messages accordingly
- Link to v1: https://patch.msgid.link/20260613-shikra_adc_support-v1-0-57d5e6c7f47d@oss.qualcomm.com

To: Bjorn Andersson <andersson@kernel.org>
To: Konrad Dybcio <konradybcio@kernel.org>
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

---
Jishnu Prakash (4):
      arm64: dts: qcom: pm4125: Add VADC and temp alarm nodes
      arm64: dts: qcom: pm8005: Add temp alarm node
      arm64: dts: qcom: Add PMIC thermal support for Shikra CQ2390M SoM platform
      arm64: dts: qcom: Add PMIC thermal support for Shikra IQ2390S SoM platform

 arch/arm64/boot/dts/qcom/pm4125.dtsi         | 105 +++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/pm8005.dtsi         |  37 ++++++++
 arch/arm64/boot/dts/qcom/shikra-cqm-som.dtsi | 123 +++++++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi | 113 ++++++++++++++++++++++++
 4 files changed, 378 insertions(+)
---
base-commit: ec039126b7fac4e3af35ebccaa7c6f9b6875ba81
change-id: 20260613-shikra_adc_support-0079650eb76c
prerequisite-message-id: 20260612-shikra-dt-v6-0-6b6cb58db477@oss.qualcomm.com
prerequisite-patch-id: 3a689e8dda5fd2755b689d94d095806b3f2e6eed
prerequisite-patch-id: ac83151a889855498d36288ddd36216d451340c8
prerequisite-patch-id: 2357cac636e019eaf14d6a493a1c72bca56fe405
prerequisite-patch-id: 2885f299e711582da312ca9d13983d296a3dd5dc
prerequisite-patch-id: 91af5f3c01e766a53ce8de69aa21847a2d6bbbf8

Best regards,
--  
Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>

[PATCH v2 1/4] arm64: dts: qcom: pm4125: Add VADC and temp alarm nodes

[Jishnu Prakash]

Add VADC node with some channels under it, for voltage and
temperature readings. Add temperature alarm node, used for
PMIC thermal mitigation.

Co-developed-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
Signed-off-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/pm4125.dtsi | 105 +++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/pm4125.dtsi b/arch/arm64/boot/dts/qcom/pm4125.dtsi
index 542e8fe030da..62f101fe5353 100644
--- a/arch/arm64/boot/dts/qcom/pm4125.dtsi
+++ b/arch/arm64/boot/dts/qcom/pm4125.dtsi
@@ -8,6 +8,36 @@
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/spmi/spmi.h>
 
+/ {
+	thermal-zones {
+		pm4125-thermal {
+			polling-delay-passive = <100>;
+			polling-delay = <0>;
+			thermal-sensors = <&pm4125_tz>;
+
+			trips {
+				pm4125_trip0: trip0 {
+					temperature = <105000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
+				pm4125_trip1: trip1 {
+					temperature = <125000>;
+					hysteresis = <0>;
+					type = "hot";
+				};
+
+				pm4125_trip2: trip2 {
+					temperature = <155000>;
+					hysteresis = <0>;
+					type = "critical";
+				};
+			};
+		};
+	};
+};
+
 &spmi_bus {
 	pmic@0 {
 		compatible = "qcom,pm2250", "qcom,spmi-pmic";
@@ -65,6 +95,81 @@ pm4125_typec: typec@1500 {
 			status = "disabled";
 		};
 
+		pm4125_tz: temp-alarm@2400 {
+			compatible = "qcom,spmi-temp-alarm";
+			reg = <0x2400>;
+			interrupts = <0x0 0x24 0x0 IRQ_TYPE_EDGE_BOTH>;
+			io-channels = <&pm4125_adc ADC5_DIE_TEMP>;
+			io-channel-names = "thermal";
+			#thermal-sensor-cells = <0>;
+		};
+
+		pm4125_adc: adc@3100 {
+			compatible = "qcom,spmi-adc5";
+			reg = <0x3100>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			#io-channel-cells = <1>;
+			interrupts = <0x0 0x31 0x0 IRQ_TYPE_EDGE_RISING>;
+
+			/* Channel nodes */
+			channel@0 {
+				reg = <ADC5_REF_GND>;
+				label = "ref_gnd";
+				qcom,pre-scaling = <1 1>;
+			};
+
+			channel@1 {
+				reg = <ADC5_1P25VREF>;
+				label = "vref_1p25";
+				qcom,pre-scaling = <1 1>;
+			};
+
+			channel@6 {
+				reg = <ADC5_DIE_TEMP>;
+				label = "die_temp";
+				qcom,pre-scaling = <1 1>;
+			};
+
+			channel@7 {
+				reg = <ADC5_USB_IN_I>;
+				label = "usb_in_i_uv";
+				qcom,pre-scaling = <1 1>;
+			};
+
+			channel@8 {
+				reg = <ADC5_USB_IN_V_16>;
+				label = "usb_in_v_div_16";
+				qcom,pre-scaling = <1 16>;
+			};
+
+			channel@9 {
+				reg = <ADC5_CHG_TEMP>;
+				label = "chg_temp";
+				qcom,pre-scaling = <1 1>;
+			};
+
+			channel@4b {
+				reg = <ADC5_BAT_ID_100K_PU>;
+				label = "bat_id";
+				qcom,ratiometric;
+				qcom,hw-settle-time = <200>;
+				qcom,pre-scaling = <1 1>;
+			};
+
+			channel@83 {
+				reg = <ADC5_VPH_PWR>;
+				label = "vph_pwr";
+				qcom,pre-scaling = <1 3>;
+			};
+
+			channel@84 {
+				reg = <ADC5_VBAT_SNS>;
+				label = "vbat_sns";
+				qcom,pre-scaling = <1 3>;
+			};
+		};
+
 		rtc@6000 {
 			compatible = "qcom,pm8941-rtc";
 			reg = <0x6000>, <0x6100>;

-- 
2.43.0

[PATCH v2 2/4] arm64: dts: qcom: pm8005: Add temp alarm node

[Jishnu Prakash]

Add temperature alarm node along with thermal zone used
for PMIC thermal mitigation.

Co-developed-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
Signed-off-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/pm8005.dtsi | 37 ++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/pm8005.dtsi b/arch/arm64/boot/dts/qcom/pm8005.dtsi
index 0f0ab2da8305..051cbde20983 100644
--- a/arch/arm64/boot/dts/qcom/pm8005.dtsi
+++ b/arch/arm64/boot/dts/qcom/pm8005.dtsi
@@ -4,6 +4,36 @@
 #include <dt-bindings/spmi/spmi.h>
 #include <dt-bindings/interrupt-controller/irq.h>
 
+/ {
+	thermal-zones {
+		pm8005-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+			thermal-sensors = <&pm8005_tz>;
+
+			trips {
+				pm8005_trip0: trip0 {
+					temperature = <105000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
+				pm8005_trip1: trip1 {
+					temperature = <125000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
+				pm8005_trip2: trip2 {
+					temperature = <145000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+			};
+		};
+	};
+};
+
 &spmi_bus {
 	pm8005_lsid0: pmic@4 {
 		compatible = "qcom,pm8005", "qcom,spmi-pmic";
@@ -11,6 +41,13 @@ pm8005_lsid0: pmic@4 {
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+		pm8005_tz: temp-alarm@2400 {
+			compatible = "qcom,spmi-temp-alarm";
+			reg = <0x2400>;
+			interrupts = <0x4 0x24 0x0 IRQ_TYPE_EDGE_BOTH>;
+			#thermal-sensor-cells = <0>;
+		};
+
 		pm8005_gpios: gpio@c000 {
 			compatible = "qcom,pm8005-gpio", "qcom,spmi-gpio";
 			reg = <0xc000>;

-- 
2.43.0

[PATCH v2 3/4] arm64: dts: qcom: Add PMIC thermal support for Shikra CQ2390M SoM platform

[Jishnu Prakash]

Add ADC channels for pa, quiet and msm thermistors along with
their ADC thermal bridge nodes and thermal zones for PMIC
thermal mitigation.

Co-developed-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
Signed-off-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/shikra-cqm-som.dtsi | 123 +++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/shikra-cqm-som.dtsi b/arch/arm64/boot/dts/qcom/shikra-cqm-som.dtsi
index dc3861489f64..7ebb206697ec 100644
--- a/arch/arm64/boot/dts/qcom/shikra-cqm-som.dtsi
+++ b/arch/arm64/boot/dts/qcom/shikra-cqm-som.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/iio/qcom,spmi-vadc.h>
 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 
 #include "shikra.dtsi"
@@ -27,9 +28,131 @@ key-volume-up {
 			linux,can-disable;
 		};
 	};
+
+	msm_therm_bridge: msm-therm-bridge {
+		compatible = "generic-adc-thermal";
+		io-channels = <&pm4125_adc ADC5_AMUX_THM3_100K_PU>;
+		io-channel-names = "sensor-channel";
+		#thermal-sensor-cells = <0>;
+	};
+
+	pa_therm_bridge: pa-therm-bridge {
+		compatible = "generic-adc-thermal";
+		io-channels = <&pm4125_adc ADC5_AMUX_THM1_100K_PU>;
+		io-channel-names = "sensor-channel";
+		#thermal-sensor-cells = <0>;
+	};
+
+	quiet_therm_bridge: quiet-therm-bridge {
+		compatible = "generic-adc-thermal";
+		io-channels = <&pm4125_adc ADC5_AMUX_THM2_100K_PU>;
+		io-channel-names = "sensor-channel";
+		#thermal-sensor-cells = <0>;
+	};
+
+	thermal-zones {
+		sys-1-thermal {
+			polling-delay-passive = <2000>;
+			polling-delay = <0>;
+			thermal-sensors = <&pa_therm_bridge>;
+
+			trips {
+				active-config0 {
+					temperature = <80000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+			};
+		};
+
+		sys-2-thermal {
+			polling-delay-passive = <2000>;
+			polling-delay = <0>;
+			thermal-sensors = <&quiet_therm_bridge>;
+
+			trips {
+				active-config0 {
+					temperature = <80000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+			};
+		};
+
+		sys-3-thermal {
+			polling-delay-passive = <2000>;
+			polling-delay = <0>;
+			thermal-sensors = <&msm_therm_bridge>;
+
+			trips {
+				active-config0 {
+					temperature = <80000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+			};
+		};
+	};
+};
+
+&pm4125_adc {
+	pinctrl-0 = <&pm4125_adc_gpio5_default>, <&pm4125_adc_gpio6_default>;
+	pinctrl-names = "default";
+
+	channel@4d {
+		reg = <ADC5_AMUX_THM1_100K_PU>;
+		label = "pa_therm";
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+	};
+
+	channel@4e {
+		reg = <ADC5_AMUX_THM2_100K_PU>;
+		label = "quiet_therm";
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+	};
+
+	channel@4f {
+		reg = <ADC5_AMUX_THM3_100K_PU>;
+		label = "msm_therm";
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+	};
+
+	channel@54 {
+		reg = <ADC5_GPIO3_100K_PU>;
+		label = "chgr_skin";
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+	};
+
+	channel@55 {
+		reg = <ADC5_GPIO4_100K_PU>;
+		label = "gnss_therm";
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+	};
 };
 
 &pm4125_gpios {
+	pm4125_adc_gpio5_default: pm4125-adc-gpio5-state {
+		pins = "gpio5";
+		function = PMIC_GPIO_FUNC_NORMAL;
+		bias-high-impedance;
+	};
+
+	pm4125_adc_gpio6_default: pm4125-adc-gpio6-state {
+		pins = "gpio6";
+		function = PMIC_GPIO_FUNC_NORMAL;
+		bias-high-impedance;
+	};
+
 	vol_up_n: vol-up-n-state {
 		pins = "gpio9";
 		function = PMIC_GPIO_FUNC_NORMAL;

-- 
2.43.0

[PATCH v2 4/4] arm64: dts: qcom: Add PMIC thermal support for Shikra IQ2390S SoM platform

[Jishnu Prakash]

Add ADC channels for system thermistors, used for thermal mitigation.
Add ADC_TM nodes for pa/quiet/msm thermistors and also thermal zones
for them.

Co-developed-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
Signed-off-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi | 113 +++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi b/arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi
index 73945bf42112..9ab0b44b00be 100644
--- a/arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi
+++ b/arch/arm64/boot/dts/qcom/shikra-iqs-som.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/iio/qcom,spmi-vadc.h>
 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 
 #include "shikra.dtsi"
@@ -26,9 +27,121 @@ key-volume-up {
 			linux,can-disable;
 		};
 	};
+
+	thermal-zones {
+		sys-1-thermal {
+			thermal-sensors = <&pm8150_adc_tm 0>;
+
+			trips {
+				active-config0 {
+					temperature = <125000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+			};
+		};
+
+		sys-2-thermal {
+			thermal-sensors = <&pm8150_adc_tm 1>;
+
+			trips {
+				active-config0 {
+					temperature = <125000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+			};
+		};
+
+		sys-3-thermal {
+			thermal-sensors = <&pm8150_adc_tm 2>;
+
+			trips {
+				active-config0 {
+					temperature = <125000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+			};
+		};
+	};
+};
+
+&pm8150_adc {
+	pinctrl-0 = <&pm8150_adc_gpio2_default>, <&pm8150_adc_gpio3_default>;
+	pinctrl-names = "default";
+
+	channel@4d {
+		reg = <ADC5_AMUX_THM1_100K_PU>;
+		label = "msm_therm";
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+	};
+
+	channel@4e {
+		reg = <ADC5_AMUX_THM2_100K_PU>;
+		label = "quiet_therm";
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+	};
+
+	channel@52 {
+		reg = <ADC5_GPIO1_100K_PU>;
+		label = "gnss_therm";
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+	};
+
+	channel@55 {
+		reg = <ADC5_GPIO4_100K_PU>;
+		label = "pa_therm";
+		qcom,ratiometric;
+		qcom,hw-settle-time = <200>;
+		qcom,pre-scaling = <1 1>;
+	};
+};
+
+&pm8150_adc_tm {
+	status = "okay";
+
+	pa-therm@0 {
+		reg = <0>;
+		io-channels = <&pm8150_adc ADC5_GPIO4_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time-us = <200>;
+	};
+
+	quiet-therm@1 {
+		reg = <1>;
+		io-channels = <&pm8150_adc ADC5_AMUX_THM2_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time-us = <200>;
+	};
+
+	msm-therm@2 {
+		reg = <2>;
+		io-channels = <&pm8150_adc ADC5_AMUX_THM1_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time-us = <200>;
+	};
 };
 
 &pm8150_gpios {
+	pm8150_adc_gpio2_default: pm8150-adc-gpio2-state {
+		pins = "gpio2";
+		function = PMIC_GPIO_FUNC_NORMAL;
+		bias-high-impedance;
+	};
+
+	pm8150_adc_gpio3_default: pm8150-adc-gpio3-state {
+		pins = "gpio3";
+		function = PMIC_GPIO_FUNC_NORMAL;
+		bias-high-impedance;
+	};
+
 	vol_up_n: vol-up-n-state {
 		pins = "gpio6";
 		function = PMIC_GPIO_FUNC_NORMAL;

-- 
2.43.0

Re: [PATCH v2 1/4] arm64: dts: qcom: pm4125: Add VADC and temp alarm nodes

[Konrad Dybcio]

On 7/9/26 11:44 AM, Jishnu Prakash wrote:
> Add VADC node with some channels under it, for voltage and
> temperature readings. Add temperature alarm node, used for
> PMIC thermal mitigation.
> 
> Co-developed-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
> Signed-off-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
> Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/pm4125.dtsi | 105 +++++++++++++++++++++++++++++++++++
>  1 file changed, 105 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/pm4125.dtsi b/arch/arm64/boot/dts/qcom/pm4125.dtsi
> index 542e8fe030da..62f101fe5353 100644
> --- a/arch/arm64/boot/dts/qcom/pm4125.dtsi
> +++ b/arch/arm64/boot/dts/qcom/pm4125.dtsi
> @@ -8,6 +8,36 @@
>  #include <dt-bindings/interrupt-controller/irq.h>
>  #include <dt-bindings/spmi/spmi.h>
>  
> +/ {
> +	thermal-zones {
> +		pm4125-thermal {
> +			polling-delay-passive = <100>;
> +			polling-delay = <0>;

=0 is the default, you can drop it

Konrad

Re: [PATCH v2 2/4] arm64: dts: qcom: pm8005: Add temp alarm node

[Konrad Dybcio]

On 7/9/26 11:44 AM, Jishnu Prakash wrote:
> Add temperature alarm node along with thermal zone used
> for PMIC thermal mitigation.
> 
> Co-developed-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
> Signed-off-by: Rakesh Kota <rakesh.kota@oss.qualcomm.com>
> Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/pm8005.dtsi | 37 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 37 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/pm8005.dtsi b/arch/arm64/boot/dts/qcom/pm8005.dtsi
> index 0f0ab2da8305..051cbde20983 100644
> --- a/arch/arm64/boot/dts/qcom/pm8005.dtsi
> +++ b/arch/arm64/boot/dts/qcom/pm8005.dtsi
> @@ -4,6 +4,36 @@
>  #include <dt-bindings/spmi/spmi.h>
>  #include <dt-bindings/interrupt-controller/irq.h>
>  
> +/ {
> +	thermal-zones {
> +		pm8005-thermal {
> +			polling-delay-passive = <0>;
> +			polling-delay = <0>;

Also here

Konrad