ARM: dts: sun4i: Add touchscreen node to pov protab2-ips9 tablet

Add a node describing the touchscreen found on the pov protab2-ips9
tablet.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun4i-a10-pov-protab2-ips9.dts

@@ -104,6 +104,22 @@ &i2c2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c2_pins_a>;
 	status = "okay";
+
+	pixcir_ts@5c {
+		pinctrl-names = "default";
+		pinctrl-0 = <&touchscreen_pins>;
+		compatible = "pixcir,pixcir_tangoc";
+		reg = <0x5c>;
+		interrupt-parent = <&pio>;
+		interrupts = <7 21 IRQ_TYPE_EDGE_FALLING>; /* EINT21 (PH21) */
+		attb-gpio = <&pio 7 21 GPIO_ACTIVE_HIGH>; /* PH21 */
+		enable-gpios = <&pio 0 5 GPIO_ACTIVE_LOW>;
+		wake-gpios = <&pio 1 13 GPIO_ACTIVE_LOW>;
+		touchscreen-size-x = <1024>;
+		touchscreen-size-y = <768>;
+		touchscreen-inverted-x;
+		touchscreen-inverted-y;
+	};
 };
 
 &lradc {
@@ -147,6 +163,13 @@ bl_en_pin_protab: bl_en_pin@0 {
 		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
 	};
 
+	touchscreen_pins: touchscreen_pins@0 {
+		allwinner,pins = "PA5", "PB13";
+		allwinner,function = "gpio_out";
+		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+	};
+
 	usb0_id_detect_pin: usb0_id_detect_pin@0 {
 		allwinner,pins = "PH4";
 		allwinner,function = "gpio_in";