1Cavium ThunderX/OCTEON-TX GPIO controller bindings 2 3Required Properties: 4- reg: The controller bus address. 5- gpio-controller: Marks the device node as a GPIO controller. 6- #gpio-cells: Must be 2. 7 - First cell is the GPIO pin number relative to the controller. 8 - Second cell is a standard generic flag bitfield as described in gpio.txt. 9 10Optional Properties: 11- compatible: "cavium,thunder-8890-gpio", unused as PCI driver binding is used. 12- interrupt-controller: Marks the device node as an interrupt controller. 13- #interrupt-cells: Must be present and have value of 2 if 14 "interrupt-controller" is present. 15 - First cell is the GPIO pin number relative to the controller. 16 - Second cell is triggering flags as defined in interrupts.txt. 17 18Example: 19 20gpio_6_0: gpio@6,0 { 21 compatible = "cavium,thunder-8890-gpio"; 22 reg = <0x3000 0 0 0 0>; /* DEVFN = 0x30 (6:0) */ 23 gpio-controller; 24 #gpio-cells = <2>; 25 interrupt-controller; 26 #interrupt-cells = <2>; 27}; 28