Documentation / devicetree / bindings / gpio / gpio_atmel.txt
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Based on kernel version 3.9. Page generated on 2013-05-02 22:58 EST.
1 * Atmel GPIO controller (PIO) 2 3 Required properties: 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 9 unused). 10 - gpio-controller: Marks the device node as a GPIO controller. 11 12 optional properties: 13 - #gpio-lines: Number of gpio if absent 32. 14 15 16 Example: 17 pioA: gpio@fffff200 { 18 compatible = "atmel,at91rm9200-gpio"; 19 reg = <0xfffff200 0x100>; 20 interrupts = <2 4>; 21 #gpio-cells = <2>; 22 gpio-controller; 23 #gpio-lines = <19>; 24 };
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