Documentation/devicetree/bindings/input/azoteq,iqs7222.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/input/azoteq,iqs7222.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/input/azoteq,iqs7222.yaml
Extension
.yaml
Size
36261 bytes
Lines
1149
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

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

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Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/azoteq,iqs7222.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Azoteq IQS7222A/B/C/D Capacitive Touch Controller

maintainers:
  - Jeff LaBundy <jeff@labundy.com>

description: |
  The Azoteq IQS7222A, IQS7222B, IQS7222C and IQS7222D are multichannel
  capacitive touch controllers that feature additional sensing capabilities.

  Link to datasheets: https://www.azoteq.com/

properties:
  compatible:
    enum:
      - azoteq,iqs7222a
      - azoteq,iqs7222b
      - azoteq,iqs7222c
      - azoteq,iqs7222d

  reg:
    maxItems: 1

  irq-gpios:
    maxItems: 1
    description:
      Specifies the GPIO connected to the device's active-low RDY output.

  reset-gpios:
    maxItems: 1
    description:
      Specifies the GPIO connected to the device's active-low MCLR input. The
      device is temporarily held in hardware reset prior to initialization if
      this property is present.

  azoteq,max-counts:
    $ref: /schemas/types.yaml#/definitions/uint32
    enum: [0, 1, 2, 3]
    description: |
      Specifies the maximum number of conversion periods (counts) that can be
      reported as follows:
      0: 1023
      1: 2047
      2: 4095
      3: 16384

  azoteq,auto-mode:
    $ref: /schemas/types.yaml#/definitions/uint32
    enum: [0, 1, 2, 3]
    description: |
      Specifies the number of conversions to occur before an interrupt is
      generated as follows:
      0: 4
      1: 8
      2: 16
      3: 32

  azoteq,ati-frac-div-fine:
    $ref: /schemas/types.yaml#/definitions/uint32
    minimum: 0
    maximum: 31
    description: Specifies the preloaded ATI fine fractional divider.

  azoteq,ati-frac-div-coarse:
    $ref: /schemas/types.yaml#/definitions/uint32

Annotation

Implementation Notes