Documentation/devicetree/bindings/gpio/pl061-gpio.txt

   1 ARM PL061 GPIO controller
   2
   3 Required properties:
   4 - compatible : "arm,pl061", "arm,primecell"
   5 - #gpio-cells : Should be two. The first cell is the pin number and the
   6   second cell is used to specify optional parameters:
   7   - bit 0 specifies polarity (0 for normal, 1 for inverted)
   8 - gpio-controller : Marks the device node as a GPIO controller.
   9 - interrupts : Interrupt mapping for GPIO IRQ.
  10 - gpio-ranges : Interaction with the PINCTRL subsystem.