Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml
Extension
.yaml
Size
2384 bytes
Lines
102
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/sound/nvidia,tegra186-dspk.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Tegra186 DSPK Controller

description: |
  The Digital Speaker Controller (DSPK) can be viewed as a Pulse
  Density Modulation (PDM) transmitter that up-samples the input to
  the desired sampling rate by interpolation and then converts the
  over sampled Pulse Code Modulation (PCM) input to the desired 1-bit
  output via Delta Sigma Modulation (DSM).

maintainers:
  - Jon Hunter <jonathanh@nvidia.com>
  - Sameer Pujar <spujar@nvidia.com>

allOf:
  - $ref: dai-common.yaml#

properties:
  $nodename:
    pattern: "^dspk@[0-9a-f]*$"

  compatible:
    oneOf:
      - const: nvidia,tegra186-dspk
      - items:
          - enum:
              - nvidia,tegra264-dspk
              - nvidia,tegra234-dspk
              - nvidia,tegra194-dspk
          - const: nvidia,tegra186-dspk

  reg:
    maxItems: 1

  clocks:
    maxItems: 1

  clock-names:
    const: dspk

  assigned-clocks:
    maxItems: 1

  assigned-clock-parents:
    maxItems: 1

  assigned-clock-rates:
    maxItems: 1

  sound-name-prefix:
    pattern: "^DSPK[1-9]$"

  ports:
    $ref: /schemas/graph.yaml#/properties/ports
    properties:
      port@0:
        $ref: audio-graph-port.yaml#
        unevaluatedProperties: false
        description: |
          DSPK ACIF (Audio Client Interface) port connected to the
          corresponding AHUB (Audio Hub) ACIF port.

      port@1:
        $ref: audio-graph-port.yaml#
        unevaluatedProperties: false

Annotation

Implementation Notes