[PATCH v4 4/4] arm64: dts: qcom: glymur-zenbook-a14: Add Embedded Controller

[Konrad Dybcio <konradybcio@kernel.org>]

From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

The Glymur-based Zenbook A14 features an Embedded Controller running
custom ASUS firmware (which is loosely based on the reference Qualcomm
Hamoa EC one with a lot of modifications). It provides keyboard
backlight control, additional temperature sensor readouts, fan speed
monitoring and a number of miscellaneous functions.

Describe it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
---
 .../dts/qcom/glymur-asus-zenbook-a14-ux3407na.dts  | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/glymur-asus-zenbook-a14-ux3407na.dts b/arch/arm64/boot/dts/qcom/glymur-asus-zenbook-a14-ux3407na.dts
index e96e65a0c5b4..6e7205c29f50 100644
--- a/arch/arm64/boot/dts/qcom/glymur-asus-zenbook-a14-ux3407na.dts
+++ b/arch/arm64/boot/dts/qcom/glymur-asus-zenbook-a14-ux3407na.dts
@@ -588,6 +588,26 @@ touchscreen@15 {
 	};
 };
 
+&i2c9 {
+	clock-frequency = <400000>;
+
+	status = "okay";
+
+	embedded-controller@76 {
+		compatible = "asus,zenbook-a14-ux3407na-ec";
+		reg = <0x76>;
+
+		interrupts-extended = <&tlmm 66 IRQ_TYPE_EDGE_FALLING>;
+
+		pinctrl-0 = <&ec_int_n_default>;
+		pinctrl-names = "default";
+
+		#thermal-sensor-cells = <1>;
+
+		wakeup-source;
+	};
+};
+
 &i2c10 {
 	clock-frequency = <400000>;
 
@@ -889,6 +909,12 @@ int-pins {
 		};
 	};
 
+	ec_int_n_default: ec-int-n-state {
+		pins = "gpio66";
+		function = "gpio";
+		bias-disable;
+	};
+
 	kybd_default: kybd-default-state {
 		pins = "gpio67";
 		function = "gpio";

-- 
2.56.0