1639d6edaSAnson Huang# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2639d6edaSAnson Huang%YAML 1.2 3639d6edaSAnson Huang--- 4639d6edaSAnson Huang$id: http://devicetree.org/schemas/input/matrix-keymap.yaml# 5639d6edaSAnson Huang$schema: http://devicetree.org/meta-schemas/core.yaml# 6639d6edaSAnson Huang 7639d6edaSAnson Huangtitle: Common key matrices binding for matrix-connected key boards 8639d6edaSAnson Huang 9639d6edaSAnson Huangmaintainers: 10639d6edaSAnson Huang - Olof Johansson <olof@lixom.net> 11639d6edaSAnson Huang 12639d6edaSAnson Huangdescription: | 13639d6edaSAnson Huang A simple common binding for matrix-connected key boards. Currently targeted at 14639d6edaSAnson Huang defining the keys in the scope of linux key codes since that is a stable and 15639d6edaSAnson Huang standardized interface at this time. 16639d6edaSAnson Huang 17639d6edaSAnson Huang Some users of this binding might choose to specify secondary keymaps for 18639d6edaSAnson Huang cases where there is a modifier key such as a Fn key. Proposed names 19639d6edaSAnson Huang for said properties are "linux,fn-keymap" or with another descriptive 20639d6edaSAnson Huang word for the modifier other from "Fn". 21639d6edaSAnson Huang 22639d6edaSAnson Huangproperties: 23639d6edaSAnson Huang linux,keymap: 24639d6edaSAnson Huang $ref: '/schemas/types.yaml#/definitions/uint32-array' 25639d6edaSAnson Huang description: | 26639d6edaSAnson Huang An array of packed 1-cell entries containing the equivalent of row, 27639d6edaSAnson Huang column and linux key-code. The 32-bit big endian cell is packed as: 28639d6edaSAnson Huang row << 24 | column << 16 | key-code 29639d6edaSAnson Huang 30639d6edaSAnson Huang keypad,num-rows: 31639d6edaSAnson Huang $ref: /schemas/types.yaml#/definitions/uint32 32639d6edaSAnson Huang description: Number of row lines connected to the keypad controller. 33639d6edaSAnson Huang 34639d6edaSAnson Huang keypad,num-columns: 35639d6edaSAnson Huang $ref: /schemas/types.yaml#/definitions/uint32 36639d6edaSAnson Huang description: Number of column lines connected to the keypad controller. 37639d6edaSAnson Huang 38*6a0e321eSRob HerringadditionalProperties: true 39*6a0e321eSRob Herring 40639d6edaSAnson Huangexamples: 41639d6edaSAnson Huang - | 42639d6edaSAnson Huang keypad { 43639d6edaSAnson Huang /* ... */ 44639d6edaSAnson Huang linux,keymap = < 0x00030012 45639d6edaSAnson Huang 0x0102003a >; 46639d6edaSAnson Huang keypad,num-rows = <2>; 47639d6edaSAnson Huang keypad,num-columns = <8>; 48639d6edaSAnson Huang }; 49