1* Abilis TB10x GPIO controller
2
3Required Properties:
4- compatible: Should be "abilis,tb10x-gpio"
5- reg: Address and length of the register set for the device
6- gpio-controller: Marks the device node as a gpio controller.
7- #gpio-cells: Should be <2>. The first cell is the pin number and the
8  second cell is used to specify optional parameters:
9   - bit 0 specifies polarity (0 for normal, 1 for inverted).
10- abilis,ngpio: the number of GPIO pins this driver controls.
11
12Optional Properties:
13- interrupt-controller: Marks the device node as an interrupt controller.
14- #interrupt-cells: Should be <1>. Interrupts are triggered on both edges.
15- interrupts: Defines the interrupt line connecting this GPIO controller to
16  its parent interrupt controller.
17- interrupt-parent: Defines the parent interrupt controller.
18
19GPIO ranges are specified as described in
20Documentation/devicetree/bindings/gpio/gpio.txt
21
22Example:
23
24	gpioa: gpio@FF140000 {
25		compatible = "abilis,tb10x-gpio";
26		interrupt-controller;
27		#interrupt-cells = <1>;
28		interrupt-parent = <&tb10x_ictl>;
29		interrupts = <27 2>;
30		reg = <0xFF140000 0x1000>;
31		gpio-controller;
32		#gpio-cells = <2>;
33		abilis,ngpio = <3>;
34		gpio-ranges = <&iomux 0 0 0>;
35		gpio-ranges-group-names = "gpioa_pins";
36	};
37