atmel,maxtouch.txt

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    1 Atmel maXTouch touchscreen/touchpad
    2 
    3 Required properties:
    4 - compatible:
    5     atmel,maxtouch
    6 
    7     The following compatibles have been used in various products but are
    8     deprecated:
    9         atmel,qt602240_ts
   10         atmel,atmel_mxt_ts
   11         atmel,atmel_mxt_tp
   12         atmel,mXT224
   13 
   14 - reg: The I2C address of the device
   15 
   16 - interrupts: The sink for the touchpad's IRQ output
   17     See ../interrupt-controller/interrupts.txt
   18 
   19 Optional properties for main touchpad device:
   20 
   21 - linux,gpio-keymap: When enabled, the SPT_GPIOPWN_T19 object sends messages
   22     on GPIO bit changes. An array of up to 8 entries can be provided
   23     indicating the Linux keycode mapped to each bit of the status byte,
   24     starting at the LSB. Linux keycodes are defined in
   25     <dt-bindings/input/input.h>.
   26 
   27     Note: the numbering of the GPIOs and the bit they start at varies between
   28     maXTouch devices. You must either refer to the documentation, or
   29     experiment to determine which bit corresponds to which input. Use
   30     KEY_RESERVED for unused padding values.
   31 
   32 - reset-gpios: GPIO specifier for the touchscreen's reset pin (active low)
   33 
   34 Example:
   35 
   36         touch@4b {
   37                 compatible = "atmel,maxtouch";
   38                 reg = <0x4b>;
   39                 interrupt-parent = <&gpio>;
   40                 interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_LOW>;
   41         };

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sys/contrib/device-tree/Bindings/input/atmel,maxtouch.txt