1A simple common binding for matrix-connected key boards. Currently targeted at
2defining the keys in the scope of linux key codes since that is a stable and
3standardized interface at this time.
4
5Required properties:
6- linux,keymap: an array of packed 1-cell entries containing the equivalent
7  of row, column and linux key-code. The 32-bit big endian cell is packed
8  as:
9	row << 24 | column << 16 | key-code
10
11Optional properties:
12Properties for the number of rows and columns are optional because some
13drivers will use fixed values for these.
14- keypad,num-rows: Number of row lines connected to the keypad controller.
15- keypad,num-columns: Number of column lines connected to the keypad
16  controller.
17
18Some users of this binding might choose to specify secondary keymaps for
19cases where there is a modifier key such as a Fn key. Proposed names
20for said properties are "linux,fn-keymap" or with another descriptive
21word for the modifier other from "Fn".
22
23Example:
24	linux,keymap = < 0x00030012
25			 0x0102003a >;
26	keypad,num-rows = <2>;
27	keypad,num-columns = <8>;
28