1* Abilis TB10x GPIO controller 2 3Required Properties: 4- compatible: Should be "abilis,tb10x-gpio" 5- reg: Address and length of the register set for the device 6- gpio-controller: Marks the device node as a gpio controller. 7- #gpio-cells: Should be <2>. The first cell is the pin number and the 8 second cell is used to specify optional parameters: 9 - bit 0 specifies polarity (0 for normal, 1 for inverted). 10- abilis,ngpio: the number of GPIO pins this driver controls. 11 12Optional Properties: 13- interrupt-controller: Marks the device node as an interrupt controller. 14- #interrupt-cells: Should be <1>. Interrupts are triggered on both edges. 15- interrupts: Defines the interrupt line connecting this GPIO controller to 16 its parent interrupt controller. 17 18GPIO ranges are specified as described in 19Documentation/devicetree/bindings/gpio/gpio.txt 20 21Example: 22 23 gpioa: gpio@ff140000 { 24 compatible = "abilis,tb10x-gpio"; 25 interrupt-controller; 26 #interrupt-cells = <1>; 27 interrupt-parent = <&tb10x_ictl>; 28 interrupts = <27 2>; 29 reg = <0xFF140000 0x1000>; 30 gpio-controller; 31 #gpio-cells = <2>; 32 abilis,ngpio = <3>; 33 gpio-ranges = <&iomux 0 0 0>; 34 gpio-ranges-group-names = "gpioa_pins"; 35 }; 36