1 * Technologic Systems I2C-FPGA's GPIO controller bindings
3 This bindings describes the GPIO controller for Technologic's FPGA core.
4 TS-4900's FPGA encodes the GPIO state on 3 bits, whereas the TS-7970's FPGA
5 uses 2 bits: it doesn't use a dedicated input bit.
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.
17 - ngpios: Number of GPIOs this controller is instantiated with,
18 the default is 32. See gpio.txt for more details.
24 compatible = "technologic,ts4900-gpio";