128 lines
3.1 KiB
YAML
128 lines
3.1 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/imx-audio-card.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NXP i.MX audio sound card.
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maintainers:
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- Shengjiu Wang <shengjiu.wang@nxp.com>
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properties:
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compatible:
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enum:
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- fsl,imx-audio-card
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model:
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$ref: /schemas/types.yaml#/definitions/string
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description: User specified audio sound card name
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audio-routing:
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$ref: /schemas/types.yaml#/definitions/non-unique-string-array
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description:
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A list of the connections between audio components. Each entry is a
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pair of strings, the first being the connection's sink, the second
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being the connection's source. Valid names could be power supplies,
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MicBias of codec and the jacks on the board.
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patternProperties:
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".*-dai-link$":
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description:
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Each subnode represents a dai link. Subnodes of each dai links would be
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cpu/codec dais.
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type: object
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properties:
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link-name:
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description: Indicates dai-link name and PCM stream name.
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$ref: /schemas/types.yaml#/definitions/string
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maxItems: 1
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format:
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description: audio format.
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items:
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enum:
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- i2s
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- dsp_b
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dai-tdm-slot-num:
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description: see tdm-slot.txt.
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$ref: /schemas/types.yaml#/definitions/uint32
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dai-tdm-slot-width:
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description: see tdm-slot.txt.
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$ref: /schemas/types.yaml#/definitions/uint32
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cpu:
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description: Holds subnode which indicates cpu dai.
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type: object
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additionalProperties: false
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properties:
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sound-dai:
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maxItems: 1
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codec:
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description: Holds subnode which indicates codec dai.
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type: object
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additionalProperties: false
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properties:
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sound-dai:
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minItems: 1
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maxItems: 2
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fsl,mclk-equal-bclk:
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description: Indicates mclk can be equal to bclk, especially for sai interface
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$ref: /schemas/types.yaml#/definitions/flag
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required:
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- link-name
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- cpu
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additionalProperties: false
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required:
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- compatible
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- model
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additionalProperties: false
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examples:
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- |
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sound-ak4458 {
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compatible = "fsl,imx-audio-card";
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model = "ak4458-audio";
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pri-dai-link {
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link-name = "akcodec";
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format = "i2s";
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fsl,mclk-equal-bclk;
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cpu {
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sound-dai = <&sai1>;
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};
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codec {
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sound-dai = <&ak4458_1>, <&ak4458_2>;
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};
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};
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fe-dai-link {
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link-name = "HiFi-ASRC-FE";
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format = "i2s";
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cpu {
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sound-dai = <&easrc>;
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};
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};
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be-dai-link {
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link-name = "HiFi-ASRC-BE";
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format = "dsp_b";
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dai-tdm-slot-num = <8>;
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dai-tdm-slot-width = <32>;
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fsl,mclk-equal-bclk;
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cpu {
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sound-dai = <&sai1>;
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};
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codec {
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sound-dai = <&ak4458_1>, <&ak4458_2>;
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};
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};
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};
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