1* Technologic Systems I2C-FPGA's GPIO controller bindings
2
3This bindings describes the GPIO controller for Technologic's FPGA core.
4TS-4900's FPGA encodes the GPIO state on 3 bits, whereas the TS-7970's FPGA
5uses 2 bits: it doesn't use a dedicated input bit.
6
7Required properties:
8- compatible: Should be one of the following
9		"technologic,ts4900-gpio"
10		"technologic,ts7970-gpio"
11- reg: Physical base address of the controller and length
12       of memory mapped region.
13- #gpio-cells: Should be two. The first cell is the pin number.
14- gpio-controller: Marks the device node as a gpio controller.
15
16Optional property:
17- ngpios: Number of GPIOs this controller is instantiated with,
18  the default is 32. See gpio.txt for more details.
19
20Example:
21
22&i2c2 {
23	gpio8: gpio@28 {
24		compatible = "technologic,ts4900-gpio";
25		reg = <0x28>;
26		#gpio-cells = <2>;
27		gpio-controller;
28		ngpios = <32>;
29	};
30};
31