| 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>; |
| }; |
