| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | Nomadik GPIO controller |
| 2 | |
| 3 | Required properties: |
| 4 | - compatible : Should be "st,nomadik-gpio". |
| 5 | - reg : Physical base address and length of the controller's registers. |
| 6 | - interrupts : The interrupt outputs from the controller. |
| 7 | - #gpio-cells : Should be two: |
| 8 | The first cell is the pin number. |
| 9 | The second cell is used to specify optional parameters: |
| 10 | - bits[3:0] trigger type and level flags: |
| 11 | 1 = low-to-high edge triggered. |
| 12 | 2 = high-to-low edge triggered. |
| 13 | 4 = active high level-sensitive. |
| 14 | 8 = active low level-sensitive. |
| 15 | - gpio-controller : Marks the device node as a GPIO controller. |
| 16 | - interrupt-controller : Marks the device node as an interrupt controller. |
| 17 | - gpio-bank : Specifies which bank a controller owns. |
| 18 | - st,supports-sleepmode : Specifies whether controller can sleep or not |
| 19 | |
| 20 | Example: |
| 21 | |
| 22 | gpio1: gpio@8012e080 { |
| 23 | compatible = "st,nomadik-gpio"; |
| 24 | reg = <0x8012e080 0x80>; |
| 25 | interrupts = <0 120 0x4>; |
| 26 | #gpio-cells = <2>; |
| 27 | gpio-controller; |
| 28 | interrupt-controller; |
| 29 | st,supports-sleepmode; |
| 30 | gpio-bank = <1>; |
| 31 | }; |