arm64: dts: qcom: msm8916-gplus-fl8005a: Add touchscreen

FL8005A uses a Focaltech FT5402 touchscreen that is connected to
blsp_i2c5. Add it to the device tree.
Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230107133223.139893-1-linmengbo0689@protonmail.com

arch/arm64/boot/dts/qcom/msm8916-gplus-fl8005a.dts

@@ -63,6 +63,32 @@ usb_id: usb-id {
 	};
 };
 
+&blsp_i2c5 {
+	status = "okay";
+
+	touchscreen@38 {
+		/* Actually ft5402 */
+		compatible = "edt,edt-ft5406";
+		reg = <0x38>;
+
+		interrupt-parent = <&msmgpio>;
+		interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+
+		reset-gpios = <&msmgpio 12 GPIO_ACTIVE_LOW>;
+
+		vcc-supply = <&pm8916_l17>;
+		iovcc-supply = <&pm8916_l6>;
+
+		touchscreen-size-x = <800>;
+		touchscreen-size-y = <500>;
+		touchscreen-inverted-x;
+		touchscreen-swapped-x-y;
+
+		pinctrl-0 = <&touchscreen_default>;
+		pinctrl-names = "default";
+	};
+};
+
 &blsp1_uart2 {
 	status = "okay";
 };
@@ -225,6 +251,22 @@ gpio_leds_default: gpio-led-default-state {
 		bias-disable;
 	};
 
+	touchscreen_default: touchscreen-default-state {
+		reset-pins {
+			pins = "gpio12";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-disable;
+		};
+
+		touchscreen-pins {
+			pins = "gpio13";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
 	usb_id_default: usb-id-default-state {
 		pins = "gpio110";
 		function = "gpio";