Commit | Line | Data |
---|---|---|
384ebe1c BC |
1 | OMAP GPIO controller bindings |
2 | ||
3 | Required properties: | |
4 | - compatible: | |
5 | - "ti,omap2-gpio" for OMAP2 controllers | |
6 | - "ti,omap3-gpio" for OMAP3 controllers | |
7 | - "ti,omap4-gpio" for OMAP4 controllers | |
8 | - #gpio-cells : Should be two. | |
9 | - first cell is the pin number | |
10 | - second cell is used to specify optional parameters (unused) | |
11 | - gpio-controller : Marks the device node as a GPIO controller. | |
12 | - #interrupt-cells : Should be 2. | |
13 | - interrupt-controller: Mark the device node as an interrupt controller | |
14 | The first cell is the GPIO number. | |
15 | The second cell is used to specify flags: | |
16 | bits[3:0] trigger type and level flags: | |
17 | 1 = low-to-high edge triggered. | |
18 | 2 = high-to-low edge triggered. | |
19 | 4 = active high level-sensitive. | |
20 | 8 = active low level-sensitive. | |
21 | ||
22 | OMAP specific properties: | |
23 | - ti,hwmods: Name of the hwmod associated to the GPIO: | |
24 | "gpio<X>", <X> being the 1-based instance number from the HW spec | |
25 | ||
26 | ||
27 | Example: | |
28 | ||
29 | gpio4: gpio4 { | |
30 | compatible = "ti,omap4-gpio"; | |
31 | ti,hwmods = "gpio4"; | |
32 | #gpio-cells = <2>; | |
33 | gpio-controller; | |
34 | #interrupt-cells = <2>; | |
35 | interrupt-controller; | |
36 | }; |