Documentation/devicetree/bindings/gpio/abilis,tb10x-gpio.txt

   1 * Abilis TB10x GPIO controller
   2
   3 Required Properties:
   4 - compatible: Should be "abilis,tb10x-gpio"
   5 - reg: Address and length of the register set for the device
   6 - gpio-controller: Marks the device node as a gpio controller.
   7 - #gpio-cells: Should be <2>. The first cell is the pin number and the
   8   second cell is used to specify optional parameters:
   9    - bit 0 specifies polarity (0 for normal, 1 for inverted).
  10 - abilis,ngpio: the number of GPIO pins this driver controls.
  11
  12 Optional Properties:
  13 - interrupt-controller: Marks the device node as an interrupt controller.
  14 - #interrupt-cells: Should be <1>. Interrupts are triggered on both edges.
  15 - interrupts: Defines the interrupt line connecting this GPIO controller to
  16   its parent interrupt controller.
  17 - interrupt-parent: Defines the parent interrupt controller.
  18
  19 GPIO ranges are specified as described in
  20 Documentation/devicetree/bindings/gpio/gpio.txt
  21
  22 Example:
  23
  24         gpioa: gpio@FF140000 {
  25                 compatible = "abilis,tb10x-gpio";
  26                 interrupt-controller;
  27                 #interrupt-cells = <1>;
  28                 interrupt-parent = <&tb10x_ictl>;
  29                 interrupts = <27 2>;
  30                 reg = <0xFF140000 0x1000>;
  31                 gpio-controller;
  32                 #gpio-cells = <2>;
  33                 abilis,ngpio = <3>;
  34                 gpio-ranges = <&iomux 0 0 0>;
  35                 gpio-ranges-group-names = "gpioa_pins";
  36         };