google,cros-ec-keyb.yaml (5322B)
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4 5$id: http://devicetree.org/schemas/input/google,cros-ec-keyb.yaml# 6$schema: http://devicetree.org/meta-schemas/core.yaml# 7 8title: ChromeOS EC Keyboard 9 10maintainers: 11 - Simon Glass <sjg@chromium.org> 12 - Benson Leung <bleung@chromium.org> 13 14description: | 15 Google's ChromeOS EC Keyboard is a simple matrix keyboard 16 implemented on a separate EC (Embedded Controller) device. It provides 17 a message for reading key scans from the EC. These are then converted 18 into keycodes for processing by the kernel. This device also supports 19 switches/buttons like power and volume buttons. 20 21properties: 22 compatible: 23 oneOf: 24 - description: ChromeOS EC with only buttons/switches 25 const: google,cros-ec-keyb-switches 26 - description: ChromeOS EC with keyboard and possibly buttons/switches 27 const: google,cros-ec-keyb 28 29 google,needs-ghost-filter: 30 description: 31 Enable a ghost filter for the matrix keyboard. This is recommended 32 if the EC does not have its own logic or hardware for this. 33 type: boolean 34 35 function-row-physmap: 36 $ref: /schemas/types.yaml#/definitions/uint32-array 37 minItems: 1 38 maxItems: 15 39 description: | 40 An ordered u32 array describing the rows/columns (in the scan matrix) 41 of top row keys from physical left (KEY_F1) to right. Each entry 42 encodes the row/column as: 43 (((row) & 0xFF) << 24) | (((column) & 0xFF) << 16) 44 where the lower 16 bits are reserved. This property is specified only 45 when the keyboard has a custom design for the top row keys. 46 47dependencies: 48 function-row-phsymap: [ 'linux,keymap' ] 49 google,needs-ghost-filter: [ 'linux,keymap' ] 50 51required: 52 - compatible 53 54if: 55 properties: 56 compatible: 57 contains: 58 const: google,cros-ec-keyb 59then: 60 $ref: "/schemas/input/matrix-keymap.yaml#" 61 required: 62 - keypad,num-rows 63 - keypad,num-columns 64 - linux,keymap 65 66unevaluatedProperties: false 67 68examples: 69 - | 70 #include <dt-bindings/input/input.h> 71 keyboard-controller { 72 compatible = "google,cros-ec-keyb"; 73 keypad,num-rows = <8>; 74 keypad,num-columns = <13>; 75 google,needs-ghost-filter; 76 function-row-physmap = < 77 MATRIX_KEY(0x00, 0x02, 0) /* T1 */ 78 MATRIX_KEY(0x03, 0x02, 0) /* T2 */ 79 MATRIX_KEY(0x02, 0x02, 0) /* T3 */ 80 MATRIX_KEY(0x01, 0x02, 0) /* T4 */ 81 MATRIX_KEY(0x03, 0x04, 0) /* T5 */ 82 MATRIX_KEY(0x02, 0x04, 0) /* T6 */ 83 MATRIX_KEY(0x01, 0x04, 0) /* T7 */ 84 MATRIX_KEY(0x02, 0x09, 0) /* T8 */ 85 MATRIX_KEY(0x01, 0x09, 0) /* T9 */ 86 MATRIX_KEY(0x00, 0x04, 0) /* T10 */ 87 >; 88 /* 89 * Keymap entries take the form of 0xRRCCKKKK where 90 * RR=Row CC=Column KKKK=Key Code 91 * The values below are for a US keyboard layout and 92 * are taken from the Linux driver. Note that the 93 * 102ND key is not used for US keyboards. 94 */ 95 linux,keymap = < 96 /* CAPSLCK F1 B F10 */ 97 0x0001003a 0x0002003b 0x00030030 0x00040044 98 /* N = R_ALT ESC */ 99 0x00060031 0x0008000d 0x000a0064 0x01010001 100 /* F4 G F7 H */ 101 0x0102003e 0x01030022 0x01040041 0x01060023 102 /* ' F9 BKSPACE L_CTRL */ 103 0x01080028 0x01090043 0x010b000e 0x0200001d 104 /* TAB F3 T F6 */ 105 0x0201000f 0x0202003d 0x02030014 0x02040040 106 /* ] Y 102ND [ */ 107 0x0205001b 0x02060015 0x02070056 0x0208001a 108 /* F8 GRAVE F2 5 */ 109 0x02090042 0x03010029 0x0302003c 0x03030006 110 /* F5 6 - \ */ 111 0x0304003f 0x03060007 0x0308000c 0x030b002b 112 /* R_CTRL A D F */ 113 0x04000061 0x0401001e 0x04020020 0x04030021 114 /* S K J ; */ 115 0x0404001f 0x04050025 0x04060024 0x04080027 116 /* L ENTER Z C */ 117 0x04090026 0x040b001c 0x0501002c 0x0502002e 118 /* V X , M */ 119 0x0503002f 0x0504002d 0x05050033 0x05060032 120 /* L_SHIFT / . SPACE */ 121 0x0507002a 0x05080035 0x05090034 0x050B0039 122 /* 1 3 4 2 */ 123 0x06010002 0x06020004 0x06030005 0x06040003 124 /* 8 7 0 9 */ 125 0x06050009 0x06060008 0x0608000b 0x0609000a 126 /* L_ALT DOWN RIGHT Q */ 127 0x060a0038 0x060b006c 0x060c006a 0x07010010 128 /* E R W I */ 129 0x07020012 0x07030013 0x07040011 0x07050017 130 /* U R_SHIFT P O */ 131 0x07060016 0x07070036 0x07080019 0x07090018 132 /* UP LEFT */ 133 0x070b0067 0x070c0069>; 134 }; 135 - | 136 /* No matrix keyboard, just buttons/switches */ 137 keyboard-controller { 138 compatible = "google,cros-ec-keyb-switches"; 139 }; 140...