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

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

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/sound/nvidia,tegra186-asrc.yaml
Extension
.yaml
Size
2288 bytes
Lines
84
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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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/nvidia,tegra186-asrc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Tegra186 ASRC

description: |
  Asynchronous Sample Rate Converter (ASRC) converts the sampling frequency
  of the input signal from one frequency to another. It can handle over a
  wide range of sample rate ratios (freq_in/freq_out) from 1:24 to 24:1.
  ASRC has two modes of operation. One where ratio can be programmed in SW
  and the other where it gets the information from ratio estimator module.

  It supports  sample rate conversions in the range of 8 to 192 kHz and
  supports 6 streams upto 12 total channels. The input data size can be
  16, 24 and 32 bits.

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

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

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

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

  reg:
    maxItems: 1

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

  ports:
    $ref: /schemas/graph.yaml#/properties/ports
    description: |
      ASRC has seven input ports and six output ports. Accordingly ACIF
      (Audio Client Interfaces) port nodes are defined to represent the
      ASRC inputs (port 0 to 6) and outputs (port 7 to 12). These are
      connected to corresponding ports on AHUB (Audio Hub). Additional
      input (port 6) is for receiving ratio information from estimator.

    patternProperties:
      '^port@[0-6]':
        $ref: audio-graph-port.yaml#
        unevaluatedProperties: false
        description: ASRC ACIF input ports
      '^port@[7-9]|1[1-2]':
        $ref: audio-graph-port.yaml#
        unevaluatedProperties: false
        description: ASRC ACIF output ports

required:
  - compatible
  - reg

Annotation

Implementation Notes