[PATCH v2 0/2] Add EC support for Purwa IOT EVK

[PATCH v2 0/2] Add EC support for Purwa IOT EVK

[Anvesh Jain P]

Add the embedded controller node to the Purwa IOT EVK board and document
its compatible. The EC provides fan control, temperature sensors and EC
state change notifications.

Signed-off-by: Anvesh Jain P <anvesh.p@oss.qualcomm.com>
---
Changes in v2:
- dt-bindings: Reworded the commit message to describe the EC hardware
  details. [Krzysztof]
- Collected Reviewed-by and Tested-by tags on the dts patch.
- Link to v1: https://lore.kernel.org/r/20260629-ec_support_for_purwa_evk-v1-0-e082b70138d6@oss.qualcomm.com

---
Anvesh Jain P (2):
      dt-bindings: embedded-controller: qcom,hamoa-crd-ec: Add Purwa IOT EVK
      arm64: dts: qcom: purwa-iot-evk: Add Embedded controller node

 .../bindings/embedded-controller/qcom,hamoa-crd-ec.yaml  |  1 +
 arch/arm64/boot/dts/qcom/purwa-iot-evk.dts               | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)
---
base-commit: 948efecf22e49aa4bf55bb73ec79a0ddcfd38571
change-id: 20260629-ec_support_for_purwa_evk-687780bec098

Best regards,
-- 
Anvesh Jain P <anvesh.p@oss.qualcomm.com>

[PATCH v2 1/2] dt-bindings: embedded-controller: qcom,hamoa-crd-ec: Add Purwa IOT EVK

[Anvesh Jain P]

Document the qcom,purwa-iot-evk-ec compatible for the embedded controller
found on Purwa IOT EVK boards.

Like the CRD, the Purwa IOT EVK carries an on-board embedded controller,
provided by ITE and running on a separate MCU, which handles fan control,
temperature sensors and EC state-change/suspend notifications. The existing
Hamoa IOT EVK documents the same EC via qcom,hamoa-iot-evk-ec.

Like the other reference designs, it uses qcom,hamoa-crd-ec as its fallback
compatible.

Signed-off-by: Anvesh Jain P <anvesh.p@oss.qualcomm.com>
---
 .../devicetree/bindings/embedded-controller/qcom,hamoa-crd-ec.yaml       | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/embedded-controller/qcom,hamoa-crd-ec.yaml b/Documentation/devicetree/bindings/embedded-controller/qcom,hamoa-crd-ec.yaml
index ac5a08f8f76d..c07483aa5937 100644
--- a/Documentation/devicetree/bindings/embedded-controller/qcom,hamoa-crd-ec.yaml
+++ b/Documentation/devicetree/bindings/embedded-controller/qcom,hamoa-crd-ec.yaml
@@ -22,6 +22,7 @@ properties:
           - enum:
               - qcom,glymur-crd-ec
               - qcom,hamoa-iot-evk-ec
+              - qcom,purwa-iot-evk-ec
           - const: qcom,hamoa-crd-ec
       - enum:
           - qcom,hamoa-crd-ec

-- 
2.34.1

Re: [PATCH v2 1/2] dt-bindings: embedded-controller: qcom,hamoa-crd-ec: Add Purwa IOT EVK

[Krzysztof Kozlowski]

On Fri, Jul 03, 2026 at 03:23:41PM +0530, Anvesh Jain P wrote:
> Document the qcom,purwa-iot-evk-ec compatible for the embedded controller
> found on Purwa IOT EVK boards.
> 
> Like the CRD, the Purwa IOT EVK carries an on-board embedded controller,
> provided by ITE and running on a separate MCU, which handles fan control,
> temperature sensors and EC state-change/suspend notifications. The existing
> Hamoa IOT EVK documents the same EC via qcom,hamoa-iot-evk-ec.
> 
> Like the other reference designs, it uses qcom,hamoa-crd-ec as its fallback
> compatible.
> 
> Signed-off-by: Anvesh Jain P <anvesh.p@oss.qualcomm.com>
> ---
>  .../devicetree/bindings/embedded-controller/qcom,hamoa-crd-ec.yaml       | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof

[PATCH v2 2/2] arm64: dts: qcom: purwa-iot-evk: Add Embedded controller node

[Anvesh Jain P]

Add embedded controller node for Purwa IOT EVK boards which adds fan
control, temperature sensors, access to EC internal state changes and
suspend entry/exit notifications to the EC.

Tested-by: Yushan Li <yushan.li@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Anvesh Jain P <anvesh.p@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/purwa-iot-evk.dts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts b/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts
index ad503beec1d3..491ea7769cd7 100644
--- a/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts
+++ b/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts
@@ -837,6 +837,16 @@ eusb6_repeater: redriver@4f {
 		pinctrl-0 = <&eusb6_reset_n>;
 		pinctrl-names = "default";
 	};
+
+	embedded-controller@76 {
+		compatible = "qcom,purwa-iot-evk-ec", "qcom,hamoa-crd-ec";
+		reg = <0x76>;
+
+		interrupts-extended = <&tlmm 66 IRQ_TYPE_EDGE_FALLING>;
+
+		pinctrl-0 = <&ec_int_n_default>;
+		pinctrl-names = "default";
+	};
 };
 
 &i2c7 {
@@ -1326,6 +1336,12 @@ right_tweeter: speaker@0,1 {
 };
 
 &tlmm {
+	ec_int_n_default: ec-int-n-state {
+		pins = "gpio66";
+		function = "gpio";
+		bias-disable;
+	};
+
 	edp_reg_en: edp-reg-en-state {
 		pins = "gpio70";
 		function = "gpio";

-- 
2.34.1