Documentation/devicetree/bindings/gpio/gpio-aspeed.txt

   1 Aspeed GPIO controller Device Tree Bindings
   2 -------------------------------------------
   3
   4 Required properties:
   5 - compatible            : Either "aspeed,ast2400-gpio" or "aspeed,ast2500-gpio"
   6
   7 - #gpio-cells           : Should be two
   8                           - First cell is the GPIO line number
   9                           - Second cell is used to specify optional
  10                             parameters (unused)
  11
  12 - reg                   : Address and length of the register set for the device
  13 - gpio-controller       : Marks the device node as a GPIO controller.
  14 - interrupts            : Interrupt specifier (see interrupt bindings for
  15                           details)
  16 - interrupt-controller  : Mark the GPIO controller as an interrupt-controller
  17
  18 Optional properties:
  19
  20 - interrupt-parent     : The parent interrupt controller, optional if inherited
  21
  22 The gpio and interrupt properties are further described in their respective
  23 bindings documentation:
  24
  25 - Documentation/devicetree/bindings/gpio/gpio.txt
  26 - Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
  27
  28   Example:
  29         gpio@1e780000 {
  30                 #gpio-cells = <2>;
  31                 compatible = "aspeed,ast2400-gpio";
  32                 gpio-controller;
  33                 interrupts = <20>;
  34                 reg = <0x1e780000 0x1000>;
  35                 interrupt-controller;
  36         };