Kernel-4.18.0-80.el8_atmel,maxtouch

Atmel maXTouch touchscreen/touchpad

Required properties:

• compatible:
  atmel,maxtouch

  The following compatibles have been used in various products but are
  deprecated:
  atmel,qt602240_ts
  atmel,atmel_mxt_ts
  atmel,atmel_mxt_tp
  atmel,mXT224

• reg: The I2C address of the device

• interrupts: The sink for the touchpad’s IRQ output
  See ../interrupt-controller/interrupts.txt

Optional properties for main touchpad device:

• linux,gpio-keymap: When enabled, the SPT_GPIOPWN_T19 object sends messages
  on GPIO bit changes. An array of up to 8 entries can be provided
  indicating the Linux keycode mapped to each bit of the status byte,
  starting at the LSB. Linux keycodes are defined in
  <dt-bindings/input/input.h>.

  Note: the numbering of the GPIOs and the bit they start at varies between
  maXTouch devices. You must either refer to the documentation, or
  experiment to determine which bit corresponds to which input. Use
  KEY_RESERVED for unused padding values.

• reset-gpios: GPIO specifier for the touchscreen’s reset pin (active low)

Example:

touch@4b {
    compatible = "atmel,maxtouch";
    reg = <0x4b>;
    interrupt-parent = <&gpio>;
    interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_LOW>;
};