Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt

   1 * Texas Instruments tsc2004 and tsc2005 touchscreen controllers
   2
   3 Required properties:
   4  - compatible                 : "ti,tsc2004" or "ti,tsc2005"
   5  - reg                        : Device address
   6  - interrupts                 : IRQ specifier
   7  - spi-max-frequency          : Maximum SPI clocking speed of the device
   8                                 (for tsc2005)
   9
  10 Optional properties:
  11  - vio-supply                 : Regulator specifier
  12  - reset-gpios                : GPIO specifier for the controller reset line
  13  - ti,x-plate-ohms            : integer, resistance of the touchscreen's X plates
  14                                 in ohm (defaults to 280)
  15  - ti,esd-recovery-timeout-ms : integer, if the touchscreen does not respond after
  16                                 the configured time (in milli seconds), the driver
  17                                 will reset it. This is disabled by default.
  18  - properties defined in touchscreen.txt
  19
  20 Example:
  21
  22 &i2c3 {
  23         tsc2004@48 {
  24                 compatible = "ti,tsc2004";
  25                 reg = <0x48>;
  26                 vio-supply = <&vio>;
  27
  28                 reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>;
  29                 interrupts-extended = <&gpio1 27 IRQ_TYPE_EDGE_RISING>;
  30
  31                 touchscreen-fuzz-x = <4>;
  32                 touchscreen-fuzz-y = <7>;
  33                 touchscreen-fuzz-pressure = <2>;
  34                 touchscreen-size-x = <4096>;
  35                 touchscreen-size-y = <4096>;
  36                 touchscreen-max-pressure = <2048>;
  37
  38                 ti,x-plate-ohms = <280>;
  39                 ti,esd-recovery-timeout-ms = <8000>;
  40         };
  41 }
  42
  43 &mcspi1 {
  44         tsc2005@0 {
  45                 compatible = "ti,tsc2005";
  46                 spi-max-frequency = <6000000>;
  47                 reg = <0>;
  48
  49                 vio-supply = <&vio>;
  50
  51                 reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>; /* 104 */
  52                 interrupts-extended = <&gpio4 4 IRQ_TYPE_EDGE_RISING>; /* 100 */
  53
  54                 touchscreen-fuzz-x = <4>;
  55                 touchscreen-fuzz-y = <7>;
  56                 touchscreen-fuzz-pressure = <2>;
  57                 touchscreen-size-x = <4096>;
  58                 touchscreen-size-y = <4096>;
  59                 touchscreen-max-pressure = <2048>;
  60
  61                 ti,x-plate-ohms = <280>;
  62                 ti,esd-recovery-timeout-ms = <8000>;
  63         };
  64 }