APM X-Gene Standby GPIO controller bindings This is a gpio controller in the standby domain. There are 20 GPIO pins from 0..21. There is no GPIO_DS14 or GPIO_DS15, only GPIO_DS8..GPIO_DS13 support interrupts. The IRQ mapping is currently 1-to-1 on interrupts 0x28 thru 0x2d. Required properties: - compatible: "apm,xgene-gpio-sb" for the X-Gene Standby GPIO controller - reg: Physical base address and size of the controller's registers - #gpio-cells: Should be two. - first cell is the pin number - second cell is used to specify the gpio polarity: 0 = active high 1 = active low - gpio-controller: Marks the device node as a GPIO controller. - interrupts: Shall contain exactly 6 interrupts. Example: sbgpio: sbgpio@17001000 { compatible = "apm,xgene-gpio-sb"; reg = <0x0 0x17001000 0x0 0x400>; #gpio-cells = <2>; gpio-controller; interrupts = <0x0 0x28 0x1>, <0x0 0x29 0x1>, <0x0 0x2a 0x1>, <0x0 0x2b 0x1>, <0x0 0x2c 0x1>, <0x0 0x2d 0x1>; };