arm64: dts: qcom: sdm845-xiaomi-beryllium-ebbg: introduce touchscreen support

Enable the Focaltech FT8719 touchscreen controller used in the Poco F1
(EBBG) panel variant.

Reviewed-by: Konrad Dybcio <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Joel Selvaraj <[email protected]>
Link: https://lore.kernel.org/r/20250506-pocof1-touchscreen-support-v4-4-bfb53da52945@joelselvaraj.com
Signed-off-by: Bjorn Andersson <[email protected]>

Author: joelselvaraj

arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium-ebbg.dts

@@ -13,3 +13,26 @@
 	compatible = "ebbg,ft8719";
 	status = "okay";
 };
+
+&i2c14 {
+	status = "okay";
+
+	touchscreen@38 {
+		compatible = "focaltech,ft8719";
+		reg = <0x38>;
+
+		interrupts-extended = <&tlmm 31 IRQ_TYPE_EDGE_RISING>;
+		reset-gpios = <&tlmm 32 GPIO_ACTIVE_LOW>;
+		panel = <&display_panel>;
+
+		iovcc-supply = <&vreg_l14a_1p8>;
+		vcc-supply = <&lab>;
+
+		pinctrl-0 = <&ts_int_default &ts_reset_default>;
+		pinctrl-1 = <&ts_int_sleep &ts_reset_sleep>;
+		pinctrl-names = "default", "sleep";
+
+		touchscreen-size-x = <1080>;
+		touchscreen-size-y = <2246>;
+	};
+};