[PATCH 2/2] arm64: dts: qcom: microsoft-romulus13: enable touchscreen

The 13.8-inch Surface Laptop 7 has an ITCH MSHW0468 touchscreen
connected to QUP1 SE0 at I2C address 0x34. Describe the controller,
interrupt, reset GPIO, and HID descriptor register so i2c-hid can
enumerate the touchscreen.

The HID descriptor is located at register 0x0000 rather than the default
0x0020.

Tested-by: fQwQf <redacted>
Signed-off-by: fQwQf <redacted>
---
 .../dts/qcom/x1e80100-microsoft-romulus13.dts     | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus13.dts b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus13.dts
index eb7580dd9..76d143943 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus13.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus13.dts

@@ -11,3 +11,18 @@ / {
 	model = "Microsoft Surface Laptop 7 (13.8 inch)";
 	compatible = "microsoft,romulus13", "qcom,x1e80100";
 };
+
+&i2c8 {
+	clock-frequency = <400000>;
+
+	status = "okay";
+
+	touchscreen@34 {
+		compatible = "hid-over-i2c";
+		reg = <0x34>;
+		hid-descr-addr = <0x0000>;
+
+		interrupts-extended = <&tlmm 38 IRQ_TYPE_LEVEL_LOW>;
+		reset-gpios = <&tlmm 31 GPIO_ACTIVE_LOW>;
+	};
+};

-- 
2.53.0