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- * Atmel GPIO controller (PIO)
- Required properties:
- - compatible: "atmel,<chip>-gpio", where <chip> is at91rm9200 or at91sam9x5.
- - reg: Should contain GPIO controller registers location and length
- - interrupts: Should be the port interrupt shared by all the pins.
- - #gpio-cells: Should be two. The first cell is the pin number and
- the second cell is used to specify optional parameters (currently
- unused).
- - gpio-controller: Marks the device node as a GPIO controller.
- optional properties:
- - #gpio-lines: Number of gpio if absent 32.
- Example:
- pioA: gpio@fffff200 {
- compatible = "atmel,at91rm9200-gpio";
- reg = <0xfffff200 0x100>;
- interrupts = <2 4>;
- #gpio-cells = <2>;
- gpio-controller;
- #gpio-lines = <19>;
- };
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