| Shawn Guo | 8937cb6 | 2011-07-07 00:37:43 +0800 | [diff] [blame] | 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 |
| Shawn Guo | c1cb438 | 2012-06-28 11:15:37 +0800 | [diff] [blame^] | 11 | the second cell is used to specify the gpio polarity: |
| 12 | 0 = active high |
| 13 | 1 = active low |
| Shawn Guo | 8937cb6 | 2011-07-07 00:37:43 +0800 | [diff] [blame] | 14 | |
| 15 | Example: |
| 16 | |
| 17 | gpio0: gpio@73f84000 { |
| 18 | compatible = "fsl,imx51-gpio", "fsl,imx31-gpio"; |
| 19 | reg = <0x73f84000 0x4000>; |
| 20 | interrupts = <50 51>; |
| 21 | gpio-controller; |
| 22 | #gpio-cells = <2>; |
| 23 | }; |