| Sourav Poddar | 1398743 | 2012-07-13 00:10:47 -0700 | [diff] [blame^] | 1 | * TI's Keypad Controller device tree bindings |
| 2 | |
| 3 | TI's Keypad controller is used to interface a SoC with a matrix-type |
| 4 | keypad device. The keypad controller supports multiple row and column lines. |
| 5 | A key can be placed at each intersection of a unique row and a unique column. |
| 6 | The keypad controller can sense a key-press and key-release and report the |
| 7 | event using a interrupt to the cpu. |
| 8 | |
| 9 | Required SoC Specific Properties: |
| 10 | - compatible: should be one of the following |
| 11 | - "ti,omap4-keypad": For controllers compatible with omap4 keypad |
| 12 | controller. |
| 13 | |
| 14 | Required Board Specific Properties, in addition to those specified by |
| 15 | the shared matrix-keyboard bindings: |
| 16 | - keypad,num-rows: Number of row lines connected to the keypad |
| 17 | controller. |
| 18 | |
| 19 | - keypad,num-columns: Number of column lines connected to the |
| 20 | keypad controller. |
| 21 | |
| 22 | Optional Properties specific to linux: |
| 23 | - linux,keypad-no-autorepeat: do no enable autorepeat feature. |
| 24 | |
| 25 | Example: |
| 26 | keypad@4ae1c000{ |
| 27 | compatible = "ti,omap4-keypad"; |
| 28 | keypad,num-rows = <2>; |
| 29 | keypad,num-columns = <8>; |
| 30 | linux,keypad-no-autorepeat; |
| 31 | }; |