Commit | Line | Data |
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8937cb60 SG |
1 | * Freescale i.MX/MXC GPIO controller |
2 | ||
3 | Required properties: | |
4 | - compatible : Should be "fsl,<soc>-gpio" | |
5 | - reg : Address and length of the register set for the device | |
6 | - interrupts : Should be the port interrupt shared by all 32 pins, if | |
7 | one number. If two numbers, the first one is the interrupt shared | |
8 | by low 16 pins and the second one is for high 16 pins. | |
9 | - gpio-controller : Marks the device node as a gpio controller. | |
10 | - #gpio-cells : Should be two. The first cell is the pin number and | |
c1cb4385 SG |
11 | the second cell is used to specify the gpio polarity: |
12 | 0 = active high | |
13 | 1 = active low | |
88cde8b7 SG |
14 | - interrupt-controller: Marks the device node as an interrupt controller. |
15 | - #interrupt-cells : Should be 2. The first cell is the GPIO number. | |
16 | The second cell bits[3:0] is used to specify 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. | |
8937cb60 SG |
21 | |
22 | Example: | |
23 | ||
24 | gpio0: gpio@73f84000 { | |
aeb27748 | 25 | compatible = "fsl,imx51-gpio", "fsl,imx35-gpio"; |
8937cb60 SG |
26 | reg = <0x73f84000 0x4000>; |
27 | interrupts = <50 51>; | |
28 | gpio-controller; | |
29 | #gpio-cells = <2>; | |
88cde8b7 SG |
30 | interrupt-controller; |
31 | #interrupt-cells = <2>; | |
8937cb60 | 32 | }; |