Documentation/devicetree/bindings/input/elan_i2c.txt

   1 Elantech I2C Touchpad
   2
   3 Required properties:
   4 - compatible: must be "elan,ekth3000".
   5 - reg: I2C address of the chip.
   6 - interrupts: interrupt to which the chip is connected (see interrupt
   7   binding[0]).
   8
   9 Optional properties:
  10 - wakeup-source: touchpad can be used as a wakeup source.
  11 - pinctrl-names: should be "default" (see pinctrl binding [1]).
  12 - pinctrl-0: a phandle pointing to the pin settings for the device (see
  13   pinctrl binding [1]).
  14 - vcc-supply: a phandle for the regulator supplying 3.3V power.
  15 - elan,trackpoint: touchpad can support a trackpoint (boolean)
  16 - elan,clickpad: touchpad is a clickpad (the entire surface is a button)
  17 - elan,middle-button: touchpad has a physical middle button
  18 - elan,x_traces: number of antennas on the x axis
  19 - elan,y_traces: number of antennas on the y axis
  20 - some generic touchscreen properties [2]:
  21   * touchscreen-size-x
  22   * touchscreen-size-y
  23   * touchscreen-x-mm
  24   * touchscreen-y-mm
  25
  26
  27 [0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
  28 [1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
  29 [2]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
  30
  31 Example:
  32         &i2c1 {
  33                 /* ... */
  34
  35                 touchpad@15 {
  36                         compatible = "elan,ekth3000";
  37                         reg = <0x15>;
  38                         interrupt-parent = <&gpio4>;
  39                         interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>;
  40                         wakeup-source;
  41                 };
  42
  43                 /* ... */
  44         };