Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt

   1 FocalTech EDT-FT5x06 Polytouch driver
   2 =====================================
   3
   4 There are 3 variants of the chip for various touch panel sizes
   5 FT5206GE1  2.8" .. 3.8"
   6 FT5306DE4  4.3" .. 7"
   7 FT5406EE8  7"   .. 8.9"
   8 FT5506EEG  7"   .. 8.9"
   9
  10 The software interface is identical for all those chips, so that
  11 currently there is no need for the driver to distinguish between the
  12 different chips. Nevertheless distinct compatible strings are used so
  13 that a distinction can be added if necessary without changing the DT
  14 bindings.
  15
  16
  17 Required properties:
  18  - compatible:  "edt,edt-ft5206"
  19            or:  "edt,edt-ft5306"
  20            or:  "edt,edt-ft5406"
  21            or:  "edt,edt-ft5506"
  22            or:  "focaltech,ft6236"
  23
  24  - reg:         I2C slave address of the chip (0x38)
  25  - interrupt-parent: a phandle pointing to the interrupt controller
  26                      serving the interrupt for this chip
  27  - interrupts:       interrupt specification for the touchdetect
  28                      interrupt
  29
  30 Optional properties:
  31  - reset-gpios: GPIO specification for the RESET input
  32  - wake-gpios:  GPIO specification for the WAKE input
  33
  34  - pinctrl-names: should be "default"
  35  - pinctrl-0:   a phandle pointing to the pin settings for the
  36                 control gpios
  37
  38  - threshold:   allows setting the "click"-threshold in the range
  39                 from 20 to 80.
  40
  41  - gain:        allows setting the sensitivity in the range from 0 to
  42                 31. Note that lower values indicate higher
  43                 sensitivity.
  44
  45  - offset:      allows setting the edge compensation in the range from
  46                 0 to 31.
  47  - touchscreen-size-x      : See touchscreen.txt
  48  - touchscreen-size-y      : See touchscreen.txt
  49  - touchscreen-fuzz-x      : See touchscreen.txt
  50  - touchscreen-fuzz-y      : See touchscreen.txt
  51  - touchscreen-inverted-x  : See touchscreen.txt
  52  - touchscreen-inverted-y  : See touchscreen.txt
  53  - touchscreen-swapped-x-y : See touchscreen.txt
  54
  55 Example:
  56         polytouch: edt-ft5x06@38 {
  57                 compatible = "edt,edt-ft5406", "edt,edt-ft5x06";
  58                 reg = <0x38>;
  59                 pinctrl-names = "default";
  60                 pinctrl-0 = <&edt_ft5x06_pins>;
  61                 interrupt-parent = <&gpio2>;
  62                 interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
  63                 reset-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
  64                 wake-gpios = <&gpio4 9 GPIO_ACTIVE_HIGH>;
  65         };