1* Toradex Colibri VF50 Touchscreen driver
2
3Required Properties:
4- compatible must be toradex,vf50-touchscreen
5- io-channels: adc channels being used by the Colibri VF50 module
6- xp-gpios: FET gate driver for input of X+
7- xm-gpios: FET gate driver for input of X-
8- yp-gpios: FET gate driver for input of Y+
9- ym-gpios: FET gate driver for input of Y-
10- interrupt-parent: phandle for the interrupt controller
11- interrupts: pen irq interrupt for touch detection
12- pinctrl-names: "idle", "default", "gpios"
13- pinctrl-0: pinctrl node for pen/touch detection state pinmux
14- pinctrl-1: pinctrl node for X/Y and pressure measurement (ADC) state pinmux
15- pinctrl-2: pinctrl node for gpios functioning as FET gate drivers
16- vf50-ts-min-pressure: pressure level at which to stop measuring X/Y values
17
18Example:
19
20	touchctrl: vf50_touchctrl {
21		compatible = "toradex,vf50-touchscreen";
22		io-channels = <&adc1 0>,<&adc0 0>,
23				<&adc0 1>,<&adc1 2>;
24		xp-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
25		xm-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
26		yp-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
27		ym-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
28		interrupt-parent = <&gpio0>;
29		interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
30		pinctrl-names = "idle","default","gpios";
31		pinctrl-0 = <&pinctrl_touchctrl_idle>;
32		pinctrl-1 = <&pinctrl_touchctrl_default>;
33		pinctrl-2 = <&pinctrl_touchctrl_gpios>;
34		vf50-ts-min-pressure = <200>;
35		status = "disabled";
36	};
37