| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | APM X-Gene SoC GPIO controller bindings |
| 2 | |
| 3 | This is a gpio controller that is part of the flash controller. |
| 4 | This gpio controller controls a total of 48 gpios. |
| 5 | |
| 6 | Required properties: |
| 7 | - compatible: "apm,xgene-gpio" for X-Gene GPIO controller |
| 8 | - reg: Physical base address and size of the controller's registers |
| 9 | - #gpio-cells: Should be two. |
| 10 | - first cell is the pin number |
| 11 | - second cell is used to specify the gpio polarity: |
| 12 | 0 = active high |
| 13 | 1 = active low |
| 14 | - gpio-controller: Marks the device node as a GPIO controller. |
| 15 | |
| 16 | Example: |
| 17 | gpio0: gpio0@1701c000 { |
| 18 | compatible = "apm,xgene-gpio"; |
| 19 | reg = <0x0 0x1701c000 0x0 0x40>; |
| 20 | gpio-controller; |
| 21 | #gpio-cells = <2>; |
| 22 | }; |