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