1*713cb680SHung-ying TyanCROS_EC Keyboard 2*713cb680SHung-ying Tyan 3*713cb680SHung-ying TyanThe CROS_EC (Matrix Keyboard Protocol) allows communcation with a secondary 4*713cb680SHung-ying Tyanmicro used for keyboard, and possible other features. 5*713cb680SHung-ying Tyan 6*713cb680SHung-ying TyanThe CROS_EC keyboard uses this protocol to receive key scans and produce input 7*713cb680SHung-ying Tyanin U-Boot. 8*713cb680SHung-ying Tyan 9*713cb680SHung-ying TyanRequired properties : 10*713cb680SHung-ying Tyan- compatible : "google,cros-ec-keyb" 11*713cb680SHung-ying Tyan- google,key-rows : Number of key rows 12*713cb680SHung-ying Tyan- google,key-columns : Number of key columns 13*713cb680SHung-ying Tyan 14*713cb680SHung-ying TyanOptional properties, in addition to those specified by the shared 15*713cb680SHung-ying Tyanmatrix-keyboard bindings: 16*713cb680SHung-ying Tyan 17*713cb680SHung-ying Tyan- linux,fn-keymap: a second keymap, same specification as the 18*713cb680SHung-ying Tyan matrix-keyboard-controller spec but to be used when the KEY_FN modifier 19*713cb680SHung-ying Tyan key is pressed. 20*713cb680SHung-ying Tyan- google,repeat-delay-ms : delay in milliseconds before repeat starts 21*713cb680SHung-ying Tyan- google,repeat-rate-ms : delay between each subsequent key press 22*713cb680SHung-ying Tyan- google,ghost-filter : enable ghost filtering for this device 23*713cb680SHung-ying Tyan 24*713cb680SHung-ying TyanExample, taken from daisy: 25*713cb680SHung-ying Tyan 26*713cb680SHung-ying Tyancros-ec-keyb { 27*713cb680SHung-ying Tyan compatible = "google,cros-ec-keyb"; 28*713cb680SHung-ying Tyan google,key-rows = <8>; 29*713cb680SHung-ying Tyan google,key-columns = <13>; 30*713cb680SHung-ying Tyan google,ghost-filter; 31*713cb680SHung-ying Tyan google,repeat-delay-ms = <240>; 32*713cb680SHung-ying Tyan google,repeat-rate-ms = <30>; 33*713cb680SHung-ying Tyan /* 34*713cb680SHung-ying Tyan * Keymap entries take the form of 0xRRCCKKKK where 35*713cb680SHung-ying Tyan * RR=Row CC=Column KKKK=Key Code 36*713cb680SHung-ying Tyan * The values below are for a US keyboard layout and 37*713cb680SHung-ying Tyan * are taken from the Linux driver. Note that the 38*713cb680SHung-ying Tyan * 102ND key is not used for US keyboards. 39*713cb680SHung-ying Tyan */ 40*713cb680SHung-ying Tyan linux,keymap = < 41*713cb680SHung-ying Tyan /* CAPSLCK F1 B F10 */ 42*713cb680SHung-ying Tyan 0x0001003a 0x0002003c 0x00030030 0x00040044 43*713cb680SHung-ying Tyan /* N = R_ALT ESC */ 44*713cb680SHung-ying Tyan 0x00060031 0x0008000d 0x000a0064 0x01010001 45*713cb680SHung-ying Tyan /* F4 G F7 H */ 46*713cb680SHung-ying Tyan 0x0102003e 0x01030022 0x01040041 0x01060023 47*713cb680SHung-ying Tyan /* ' F9 BKSPACE L_CTRL */ 48*713cb680SHung-ying Tyan 0x01080028 0x01090043 0x010b000e 0x0200001d 49*713cb680SHung-ying Tyan /* TAB F3 T F6 */ 50*713cb680SHung-ying Tyan 0x0201000f 0x0202003d 0x02030014 0x02040040 51*713cb680SHung-ying Tyan /* ] Y 102ND [ */ 52*713cb680SHung-ying Tyan 0x0205001b 0x02060015 0x02070056 0x0208001a 53*713cb680SHung-ying Tyan /* F8 GRAVE F2 5 */ 54*713cb680SHung-ying Tyan 0x02090042 0x03010029 0x0302003c 0x03030006 55*713cb680SHung-ying Tyan /* F5 6 - \ */ 56*713cb680SHung-ying Tyan 0x0304003f 0x03060007 0x0308000c 0x030b002b 57*713cb680SHung-ying Tyan /* R_CTRL A D F */ 58*713cb680SHung-ying Tyan 0x04000061 0x0401001e 0x04020020 0x04030021 59*713cb680SHung-ying Tyan /* S K J ; */ 60*713cb680SHung-ying Tyan 0x0404001f 0x04050025 0x04060024 0x04080027 61*713cb680SHung-ying Tyan /* L ENTER Z C */ 62*713cb680SHung-ying Tyan 0x04090026 0x040b001c 0x0501002c 0x0502002e 63*713cb680SHung-ying Tyan /* V X , M */ 64*713cb680SHung-ying Tyan 0x0503002f 0x0504002d 0x05050033 0x05060032 65*713cb680SHung-ying Tyan /* L_SHIFT / . SPACE */ 66*713cb680SHung-ying Tyan 0x0507002a 0x05080035 0x05090034 0x050B0039 67*713cb680SHung-ying Tyan /* 1 3 4 2 */ 68*713cb680SHung-ying Tyan 0x06010002 0x06020004 0x06030005 0x06040003 69*713cb680SHung-ying Tyan /* 8 7 0 9 */ 70*713cb680SHung-ying Tyan 0x06050009 0x06060008 0x0608000b 0x0609000a 71*713cb680SHung-ying Tyan /* L_ALT DOWN RIGHT Q */ 72*713cb680SHung-ying Tyan 0x060a0038 0x060b006c 0x060c006a 0x07010010 73*713cb680SHung-ying Tyan /* E R W I */ 74*713cb680SHung-ying Tyan 0x07020012 0x07030013 0x07040011 0x07050017 75*713cb680SHung-ying Tyan /* U R_SHIFT P O */ 76*713cb680SHung-ying Tyan 0x07060016 0x07070036 0x07080019 0x07090018 77*713cb680SHung-ying Tyan /* UP LEFT */ 78*713cb680SHung-ying Tyan 0x070b0067 0x070c0069>; 79*713cb680SHung-ying Tyan}; 80