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 IIO ADC for Y-, X-, Y+, X+ connections 7- xp-gpios: FET gate driver for input of X+ 8- xm-gpios: FET gate driver for input of X- 9- yp-gpios: FET gate driver for input of Y+ 10- ym-gpios: FET gate driver for input of Y- 11- interrupts: pen irq interrupt for touch detection, signal from X plate 12- pinctrl-names: "idle", "default" 13- pinctrl-0: pinctrl node for pen/touch detection, pinctrl must provide 14 pull-up resistor on X+, X-. 15- pinctrl-1: pinctrl node for X/Y and pressure measurement (ADC) state pinmux 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"; 31 pinctrl-0 = <&pinctrl_touchctrl_idle>, <&pinctrl_touchctrl_gpios>; 32 pinctrl-1 = <&pinctrl_touchctrl_default>, <&pinctrl_touchctrl_gpios>; 33 vf50-ts-min-pressure = <200>; 34 }; 35