imx-audio-card.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/sound/imx-audio-card.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: NXP i.MX audio sound card.
    8 
    9 maintainers:
   10   - Shengjiu Wang <shengjiu.wang@nxp.com>
   11 
   12 properties:
   13   compatible:
   14     enum:
   15       - fsl,imx-audio-card
   16 
   17   model:
   18     $ref: /schemas/types.yaml#/definitions/string
   19     description: User specified audio sound card name
   20 
   21   audio-routing:
   22     $ref: /schemas/types.yaml#/definitions/non-unique-string-array
   23     description:
   24       A list of the connections between audio components. Each entry is a
   25       pair of strings, the first being the connection's sink, the second
   26       being the connection's source. Valid names could be power supplies,
   27       MicBias of codec and the jacks on the board.
   28 
   29 patternProperties:
   30   ".*-dai-link$":
   31     description:
   32       Each subnode represents a dai link. Subnodes of each dai links would be
   33       cpu/codec dais.
   34 
   35     type: object
   36 
   37     properties:
   38       link-name:
   39         description: Indicates dai-link name and PCM stream name.
   40         $ref: /schemas/types.yaml#/definitions/string
   41         maxItems: 1
   42 
   43       format:
   44         description: audio format.
   45         items:
   46           enum:
   47             - i2s
   48             - dsp_b
   49 
   50       dai-tdm-slot-num:
   51         description: see tdm-slot.txt.
   52         $ref: /schemas/types.yaml#/definitions/uint32
   53 
   54       dai-tdm-slot-width:
   55         description: see tdm-slot.txt.
   56         $ref: /schemas/types.yaml#/definitions/uint32
   57 
   58       cpu:
   59         description: Holds subnode which indicates cpu dai.
   60         type: object
   61         properties:
   62           sound-dai:
   63             maxItems: 1
   64 
   65       codec:
   66         description: Holds subnode which indicates codec dai.
   67         type: object
   68         properties:
   69           sound-dai:
   70             minItems: 1
   71             maxItems: 2
   72 
   73       fsl,mclk-equal-bclk:
   74         description: Indicates mclk can be equal to bclk, especially for sai interface
   75         $ref: /schemas/types.yaml#/definitions/flag
   76 
   77     required:
   78       - link-name
   79       - cpu
   80 
   81     additionalProperties: false
   82 
   83 required:
   84   - compatible
   85   - model
   86 
   87 additionalProperties: false
   88 
   89 examples:
   90   - |
   91     sound-ak4458 {
   92         compatible = "fsl,imx-audio-card";
   93         model = "ak4458-audio";
   94         pri-dai-link {
   95             link-name = "akcodec";
   96             format = "i2s";
   97             fsl,mclk-equal-bclk;
   98             cpu {
   99                  sound-dai = <&sai1>;
  100             };
  101             codec {
  102                  sound-dai = <&ak4458_1>, <&ak4458_2>;
  103             };
  104         };
  105         fe-dai-link {
  106             link-name = "HiFi-ASRC-FE";
  107             format = "i2s";
  108             cpu {
  109                 sound-dai = <&easrc>;
  110             };
  111         };
  112         be-dai-link {
  113             link-name = "HiFi-ASRC-BE";
  114             format = "dsp_b";
  115             dai-tdm-slot-num = <8>;
  116             dai-tdm-slot-width = <32>;
  117             fsl,mclk-equal-bclk;
  118             cpu {
  119                 sound-dai = <&sai1>;
  120             };
  121             codec {
  122                 sound-dai = <&ak4458_1>, <&ak4458_2>;
  123             };
  124         };
  125     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/sound/imx-audio-card.yaml

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sys/contrib/device-tree/Bindings/sound/imx-audio-card.yaml