1 * Atmel GPIO controller (PIO)
4 - compatible: "atmel,<chip>-gpio", where <chip> is at91rm9200 or at91sam9x5.
5 - reg: Should contain GPIO controller registers location and length
6 - interrupts: Should be the port interrupt shared by all the pins.
7 - #gpio-cells: Should be two. The first cell is the pin number and
8 the second cell is used to specify optional parameters (currently
10 - gpio-controller: Marks the device node as a GPIO controller.
13 - #gpio-lines: Number of gpio if absent 32.
18 compatible = "atmel,at91rm9200-gpio";
19 reg = <0xfffff200 0x100>;