1Cirrus Logic CLPS711X GPIO controller
2
3Required properties:
4- compatible: Should be "cirrus,ep7209-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
14Note: Each GPIO port should have an alias correctly numbered in "aliases"
15node.
16
17Example:
18
19aliases {
20	gpio0 = &porta;
21};
22
23porta: gpio@80000000 {
24	compatible = "cirrus,ep7312-gpio","cirrus,ep7209-gpio";
25	reg = <0x80000000 0x1>, <0x80000040 0x1>;
26	gpio-controller;
27	#gpio-cells = <2>;
28};
29