| * Toradex Colibri VF50 Touchscreen driver |
| |
| Required Properties: |
| - compatible must be toradex,vf50-touchscreen |
| - io-channels: adc channels being used by the Colibri VF50 module |
| IIO ADC for Y-, X-, Y+, X+ connections |
| - xp-gpios: FET gate driver for input of X+ |
| - xm-gpios: FET gate driver for input of X- |
| - yp-gpios: FET gate driver for input of Y+ |
| - ym-gpios: FET gate driver for input of Y- |
| - interrupts: pen irq interrupt for touch detection, signal from X plate |
| - pinctrl-names: "idle", "default" |
| - pinctrl-0: pinctrl node for pen/touch detection, pinctrl must provide |
| pull-up resistor on X+, X-. |
| - pinctrl-1: pinctrl node for X/Y and pressure measurement (ADC) state pinmux |
| - vf50-ts-min-pressure: pressure level at which to stop measuring X/Y values |
| |
| Example: |
| |
| touchctrl: vf50_touchctrl { |
| compatible = "toradex,vf50-touchscreen"; |
| io-channels = <&adc1 0>,<&adc0 0>, |
| <&adc0 1>,<&adc1 2>; |
| xp-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>; |
| xm-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>; |
| yp-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>; |
| ym-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>; |
| interrupt-parent = <&gpio0>; |
| interrupts = <8 IRQ_TYPE_LEVEL_LOW>; |
| pinctrl-names = "idle","default"; |
| pinctrl-0 = <&pinctrl_touchctrl_idle>, <&pinctrl_touchctrl_gpios>; |
| pinctrl-1 = <&pinctrl_touchctrl_default>, <&pinctrl_touchctrl_gpios>; |
| vf50-ts-min-pressure = <200>; |
| }; |
