Documentation/devicetree/bindings/input/matrix-keymap.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/input/matrix-keymap.yaml

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/input/matrix-keymap.yaml
Extension
.yaml
Size
1583 bytes
Lines
49
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

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Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/matrix-keymap.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Common Key Matrices on Matrix-connected Keyboards

maintainers:
  - Olof Johansson <olof@lixom.net>

description: |
  A simple common binding for matrix-connected keyboards. Currently targeted at
  defining the keys in the scope of linux key codes since that is a stable and
  standardized interface at this time.

  Some users of this binding might choose to specify secondary keymaps for
  cases where there is a modifier key such as a Fn key. Proposed names
  for said properties are "linux,fn-keymap" or with another descriptive
  word for the modifier other from "Fn".

properties:
  linux,keymap:
    $ref: /schemas/types.yaml#/definitions/uint32-array
    description: |
      An array of packed 1-cell entries containing the equivalent of row,
      column and linux key-code. The 32-bit big endian cell is packed as:
          row << 24 | column << 16 | key-code

  keypad,num-rows:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: Number of row lines connected to the keypad controller.

  keypad,num-columns:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: Number of column lines connected to the keypad controller.

additionalProperties: true

examples:
  - |
    keypad {
        /* ... */
        linux,keymap = < 0x00030012
                         0x0102003a >;
        keypad,num-rows = <2>;
        keypad,num-columns = <8>;
    };

Annotation

Implementation Notes