3 The CROS_EC (Matrix Keyboard Protocol) allows communcation with a secondary
4 micro used for keyboard, and possible other features.
6 The CROS_EC keyboard uses this protocol to receive key scans and produce input
10 - compatible : "google,cros-ec-keyb"
11 - google,key-rows : Number of key rows
12 - google,key-columns : Number of key columns
14 Optional properties, in addition to those specified by the shared
15 matrix-keyboard bindings:
17 - linux,fn-keymap: a second keymap, same specification as the
18 matrix-keyboard-controller spec but to be used when the KEY_FN modifier
20 - google,repeat-delay-ms : delay in milliseconds before repeat starts
21 - google,repeat-rate-ms : delay between each subsequent key press
22 - google,ghost-filter : enable ghost filtering for this device
24 Example, taken from daisy:
27 compatible = "google,cros-ec-keyb";
28 google,key-rows = <8>;
29 google,key-columns = <13>;
31 google,repeat-delay-ms = <240>;
32 google,repeat-rate-ms = <30>;
34 * Keymap entries take the form of 0xRRCCKKKK where
35 * RR=Row CC=Column KKKK=Key Code
36 * The values below are for a US keyboard layout and
37 * are taken from the Linux driver. Note that the
38 * 102ND key is not used for US keyboards.
41 /* CAPSLCK F1 B F10 */
42 0x0001003a 0x0002003c 0x00030030 0x00040044
44 0x00060031 0x0008000d 0x000a0064 0x01010001
46 0x0102003e 0x01030022 0x01040041 0x01060023
47 /* ' F9 BKSPACE L_CTRL */
48 0x01080028 0x01090043 0x010b000e 0x0200001d
50 0x0201000f 0x0202003d 0x02030014 0x02040040
52 0x0205001b 0x02060015 0x02070056 0x0208001a
54 0x02090042 0x03010029 0x0302003c 0x03030006
56 0x0304003f 0x03060007 0x0308000c 0x030b002b
58 0x04000061 0x0401001e 0x04020020 0x04030021
60 0x0404001f 0x04050025 0x04060024 0x04080027
62 0x04090026 0x040b001c 0x0501002c 0x0502002e
64 0x0503002f 0x0504002d 0x05050033 0x05060032
65 /* L_SHIFT / . SPACE */
66 0x0507002a 0x05080035 0x05090034 0x050B0039
68 0x06010002 0x06020004 0x06030005 0x06040003
70 0x06050009 0x06060008 0x0608000b 0x0609000a
71 /* L_ALT DOWN RIGHT Q */
72 0x060a0038 0x060b006c 0x060c006a 0x07010010
74 0x07020012 0x07030013 0x07040011 0x07050017
76 0x07060016 0x07070036 0x07080019 0x07090018
78 0x070b0067 0x070c0069>;