ARM: dts: sun5i: Enable touchscreen on Utoo P66

Add a node for the chipone-icn8318 touchscreen found on the Utoo P66 tablet.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun5i-a13-utoo-p66.dts

@@ -50,6 +50,7 @@
 #include "sunxi-common-regulators.dtsi"
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/pinctrl/sun4i-a10.h>
 
 / {
@@ -93,6 +94,20 @@ &i2c1 {
 	pinctrl-0 = <&i2c1_pins_a>;
 	status = "okay";
 
+	icn8318: touchscreen@40 {
+		compatible = "chipone,icn8318";
+		reg = <0x40>;
+		interrupt-parent = <&pio>;
+		interrupts = <9 IRQ_TYPE_EDGE_FALLING>; /* EINT9 (PG9) */
+		pinctrl-names = "default";
+		pinctrl-0 = <&ts_wake_pin_p66>;
+		wake-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; /* PB3 */
+		touchscreen-size-x = <800>;
+		touchscreen-size-y = <480>;
+		touchscreen-inverted-x;
+		touchscreen-swapped-x-y;
+	};
+
 	pcf8563: rtc@51 {
 		compatible = "nxp,pcf8563";
 		reg = <0x51>;
@@ -158,6 +173,13 @@ i2c_lcd_pins: i2c_lcd_pin@0 {
 		allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
 	};
 
+	ts_wake_pin_p66: ts_wake_pin@0 {
+		allwinner,pins = "PB3";
+		allwinner,function = "gpio_out";
+		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+	};
+
 	usb0_vbus_pin_a: usb0_vbus_pin@0 {
 		allwinner,pins = "PB4";
 		allwinner,function = "gpio_out";