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 to declare if the GPIO
9 is active high or low. See gpio.txt.
10 - gpio-controller: Marks the device node as a GPIO controller.
11 - interrupt-controller: Marks the device node as an interrupt controller.
12 - #interrupt-cells: Should be two. The first cell is the pin number and the
13 second cell is used to specify irq type flags, see the two cell description
14 in interrupt-controller/interrupts.txt for details.
17 - #gpio-lines: Number of gpio if absent 32.
22 compatible = "atmel,at91rm9200-gpio";
23 reg = <0xfffff200 0x100>;
29 #interrupt-cells = <2>;