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1* Abilis TB10x GPIO controller2 3Required Properties:4- compatible: Should be "abilis,tb10x-gpio"5- reg: Address and length of the register set for the device6- gpio-controller: Marks the device node as a gpio controller.7- #gpio-cells: Should be <2>. The first cell is the pin number and the8 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 to16 its parent interrupt controller.17 18GPIO ranges are specified as described in19Documentation/devicetree/bindings/gpio/gpio.txt20 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