Documentation/devicetree/bindings/input/touchscreen/toradex,vf50-touchscreen.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/input/touchscreen/toradex,vf50-touchscreen.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Toradex Colibri VF50 Touchscreen
   8
   9 maintainers:
  10   - Dmitry Torokhov <dmitry.torokhov@gmail.com>
  11   - Sanchayan Maity <maitysanchayan@gmail.com>
  12
  13 properties:
  14   compatible:
  15     const: toradex,vf50-touchscreen
  16
  17   interrupts:
  18     maxItems: 1
  19
  20   io-channels:
  21     maxItems: 4
  22     description:
  23       adc channels being used by the Colibri VF50 module
  24       IIO ADC for Y-, X-, Y+, X+ connections
  25
  26   xp-gpios:
  27     description: FET gate driver for input of X+
  28
  29   xm-gpios:
  30     description: FET gate driver for input of X-
  31
  32   yp-gpios:
  33     description: FET gate driver for input of Y+
  34
  35   ym-gpios:
  36     description: FET gate driver for input of Y-
  37
  38   vf50-ts-min-pressure:
  39     $ref: /schemas/types.yaml#/definitions/uint32
  40     minimum: 50
  41     maximum: 2000
  42     description: pressure level at which to stop measuring X/Y values
  43
  44 required:
  45   - compatible
  46   - io-channels
  47   - xp-gpios
  48   - xm-gpios
  49   - yp-gpios
  50   - ym-gpios
  51   - interrupts
  52   - vf50-ts-min-pressure
  53
  54 allOf:
  55   - $ref: touchscreen.yaml#
  56
  57 unevaluatedProperties: false
  58
  59 examples:
  60   - |
  61     #include <dt-bindings/interrupt-controller/irq.h>
  62     #include <dt-bindings/gpio/gpio.h>
  63
  64     touchscreen {
  65         compatible = "toradex,vf50-touchscreen";
  66         interrupt-parent = <&gpio0>;
  67         interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
  68         io-channels = <&adc1 0>, <&adc0 0>, <&adc0 1>, <&adc1 2>;
  69         xp-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
  70         xm-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
  71         yp-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
  72         ym-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
  73         pinctrl-names = "idle", "default";
  74         pinctrl-0 = <&pinctrl_touchctrl_idle>, <&pinctrl_touchctrl_gpios>;
  75         pinctrl-1 = <&pinctrl_touchctrl_default>, <&pinctrl_touchctrl_gpios>;
  76         vf50-ts-min-pressure = <200>;
  77     };