| A simple common binding for matrix-connected key boards. Currently targeted at |
| defining the keys in the scope of linux key codes since that is a stable and |
| standardized interface at this time. |
| |
| Required properties: |
| - linux,keymap: an array of packed 1-cell entries containing the equivalent |
| of row, column and linux key-code. The 32-bit big endian cell is packed |
| as: |
| row << 24 | column << 16 | key-code |
| |
| Optional properties: |
| Properties for the number of rows and columns are optional because some |
| drivers will use fixed values for these. |
| - keypad,num-rows: Number of row lines connected to the keypad controller. |
| - keypad,num-columns: Number of column lines connected to the keypad |
| controller. |
| |
| Some users of this binding might choose to specify secondary keymaps for |
| cases where there is a modifier key such as a Fn key. Proposed names |
| for said properties are "linux,fn-keymap" or with another descriptive |
| word for the modifier other from "Fn". |
| |
| Example: |
| linux,keymap = < 0x00030012 |
| 0x0102003a >; |
| keypad,num-rows = <2>; |
| keypad,num-columns = <8>; |
