[deliverable/linux.git] / Documentation / devicetree / bindings / gpio / gpio-clps711x.txt

Cirrus Logic CLPS711X GPIO controller

Required properties:
- compatible: Should be "cirrus,clps711x-gpio"
- reg: Physical base GPIO controller registers location and length.
  There should be two registers, first is DATA register, the second
  is DIRECTION.
- gpio-controller: Marks the device node as a gpio controller.
- #gpio-cells: Should be two. The first cell is the pin number and
  the second cell is used to specify the gpio polarity:
    0 = active high
    1 = active low

Note: Each GPIO port should have an alias correctly numbered in "aliases"
node.

Example:

aliases {
	gpio0 = &porta;
};

porta: gpio@80000000 {
	compatible = "cirrus,clps711x-gpio";
	reg = <0x80000000 0x1>, <0x80000040 0x1>;
	gpio-controller;
	#gpio-cells = <2>;
};
Commit	Line	Data
a180132f AS	1	Cirrus Logic CLPS711X GPIO controller
	2
	3	Required properties:
	4	- compatible: Should be "cirrus,clps711x-gpio"
	5	- reg: Physical base GPIO controller registers location and length.
	6	There should be two registers, first is DATA register, the second
	7	is DIRECTION.
	8	- gpio-controller: Marks the device node as a gpio controller.
	9	- #gpio-cells: Should be two. The first cell is the pin number and
	10	the second cell is used to specify the gpio polarity:
	11	0 = active high
	12	1 = active low
	13
	14	Note: Each GPIO port should have an alias correctly numbered in "aliases"
	15	node.
	16
	17	Example:
	18
	19	aliases {
	20	gpio0 = &porta;
	21	};
	22
	23	porta: gpio@80000000 {
	24	compatible = "cirrus,clps711x-gpio";
	25	reg = <0x80000000 0x1>, <0x80000040 0x1>;
	26	gpio-controller;
	27	#gpio-cells = <2>;
	28	};