Axis ETRAX FS General I/O controller bindings Required properties: - compatible: one of: - "axis,etraxfs-gio" - "axis,artpec3-gio" - reg: Physical base address and length of the controller's registers. - #gpio-cells: Should be 3 - The first cell is the gpio offset number. - The second cell is reserved and is currently unused. - The third cell is the port number (hex). - gpio-controller: Marks the device node as a GPIO controller. Example: gio: gpio@b001a000 { compatible = "axis,etraxfs-gio"; reg = <0xb001a000 0x1000>; gpio-controller; #gpio-cells = <3>; };