| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | * Abilis TB10x GPIO controller |
| 2 | |
| 3 | Required 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 | |
| 12 | Optional 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 | |
| 18 | GPIO ranges are specified as described in |
| 19 | Documentation/devicetree/bindings/gpio/gpio.txt |
| 20 | |
| 21 | Example: |
| 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 | }; |