Bindings/input/touchscreen/tsc2007.txt

   1 * Texas Instruments tsc2007 touchscreen controller
   2
   3 Required properties:
   4 - compatible: must be "ti,tsc2007".
   5 - reg: I2C address of the chip.
   6 - ti,x-plate-ohms: X-plate resistance in ohms.
   7
   8 Optional properties:
   9 - gpios: the interrupt gpio the chip is connected to (through the penirq pin).
  10   The penirq pin goes to low when the panel is touched.
  11   (see GPIO binding[1] for more details).
  12 - interrupts: (gpio) interrupt to which the chip is connected
  13   (see interrupt binding[0]).
  14 - ti,max-rt: maximum pressure.
  15 - ti,fuzzx: specifies the absolute input fuzz x value.
  16   If set, it will permit noise in the data up to +- the value given to the fuzz
  17   parameter, that is used to filter noise from the event stream.
  18 - ti,fuzzy: specifies the absolute input fuzz y value.
  19 - ti,fuzzz: specifies the absolute input fuzz z value.
  20 - ti,poll-period: how much time to wait (in milliseconds) before reading again the
  21   values from the tsc2007.
  22
  23 [0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
  24 [1]: Documentation/devicetree/bindings/gpio/gpio.txt
  25
  26 Example:
  27         &i2c1 {
  28                 /* ... */
  29                 tsc2007@49 {
  30                         compatible = "ti,tsc2007";
  31                         reg = <0x49>;
  32                         interrupt-parent = <&gpio4>;
  33                         interrupts = <0x0 0x8>;
  34                         gpios = <&gpio4 0 0>;
  35                         ti,x-plate-ohms = <180>;
  36                 };
  37
  38                 /* ... */
  39         };