1 * TS-4800 FPGA's GPIO controller bindings
4 - compatible: Must be "technologic,ts4800-gpio".
5 - #gpio-cells: Should be two. The first cell is the pin number.
6 - reg: Physical base address of the controller and length
7 of memory mapped region.
10 - ngpios: See "gpio.txt"
15 compatible = "technologic,ts4800-gpio";