1Aspeed GPIO controller Device Tree Bindings
2-------------------------------------------
3
4Required properties:
5- compatible		: Either "aspeed,ast2400-gpio" or "aspeed,ast2500-gpio"
6
7- #gpio-cells 		: Should be two
8			  - First cell is the GPIO line number
9			  - Second cell is used to specify optional
10			    parameters (unused)
11
12- reg			: Address and length of the register set for the device
13- gpio-controller	: Marks the device node as a GPIO controller.
14- interrupts		: Interrupt specifier (see interrupt bindings for
15			  details)
16- interrupt-controller	: Mark the GPIO controller as an interrupt-controller
17
18Optional properties:
19
20- interrupt-parent      : The parent interrupt controller, optional if inherited
21
22The gpio and interrupt properties are further described in their respective
23bindings documentation:
24
25- Documentation/devicetree/bindings/gpio/gpio.txt
26- Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
27
28  Example:
29	gpio@1e780000 {
30		#gpio-cells = <2>;
31		compatible = "aspeed,ast2400-gpio";
32		gpio-controller;
33		interrupts = <20>;
34		reg = <0x1e780000 0x1000>;
35		interrupt-controller;
36	};
37