kernel/Documentation/devicetree/bindings/gpio/gpio-nmk.txt

   1 Nomadik GPIO controller
   2
   3 Required properties:
   4 - compatible            : Should be "st,nomadik-gpio".
   5 - reg                   : Physical base address and length of the controller's registers.
   6 - interrupts            : The interrupt outputs from the controller.
   7 - #gpio-cells           : Should be two:
   8                             The first cell is the pin number.
   9                             The second cell is used to specify optional parameters:
  10                               - bits[3:0] trigger type and level flags:
  11                                   1 = low-to-high edge triggered.
  12                                   2 = high-to-low edge triggered.
  13                                   4 = active high level-sensitive.
  14                                   8 = active low level-sensitive.
  15 - gpio-controller       : Marks the device node as a GPIO controller.
  16 - interrupt-controller  : Marks the device node as an interrupt controller.
  17 - gpio-bank             : Specifies which bank a controller owns.
  18 - st,supports-sleepmode : Specifies whether controller can sleep or not
  19
  20 Example:
  21
  22                 gpio1: gpio@8012e080 {
  23                         compatible = "st,nomadik-gpio";
  24                         reg =  <0x8012e080 0x80>;
  25                         interrupts = <0 120 0x4>;
  26                         #gpio-cells = <2>;
  27                         gpio-controller;
  28                         interrupt-controller;
  29                         st,supports-sleepmode;
  30                         gpio-bank = <1>;
  31                 };