| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/sound/imx-audio-card.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: NXP i.MX audio sound card. |
| |
| maintainers: |
| - Shengjiu Wang <shengjiu.wang@nxp.com> |
| |
| allOf: |
| - $ref: sound-card-common.yaml# |
| |
| properties: |
| compatible: |
| enum: |
| - fsl,imx-audio-card |
| |
| patternProperties: |
| ".*-dai-link$": |
| description: |
| Each subnode represents a dai link. Subnodes of each dai links would be |
| cpu/codec dais. |
| |
| type: object |
| |
| properties: |
| link-name: |
| description: Indicates dai-link name and PCM stream name. |
| $ref: /schemas/types.yaml#/definitions/string |
| maxItems: 1 |
| |
| format: |
| description: audio format. |
| items: |
| enum: |
| - i2s |
| - dsp_b |
| |
| dai-tdm-slot-num: |
| description: see tdm-slot.txt. |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| |
| dai-tdm-slot-width: |
| description: see tdm-slot.txt. |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| |
| cpu: |
| description: Holds subnode which indicates cpu dai. |
| type: object |
| additionalProperties: false |
| properties: |
| sound-dai: |
| maxItems: 1 |
| |
| codec: |
| description: Holds subnode which indicates codec dai. |
| type: object |
| additionalProperties: false |
| properties: |
| sound-dai: |
| minItems: 1 |
| maxItems: 2 |
| |
| fsl,mclk-equal-bclk: |
| description: Indicates mclk can be equal to bclk, especially for sai interface |
| $ref: /schemas/types.yaml#/definitions/flag |
| |
| required: |
| - link-name |
| - cpu |
| |
| additionalProperties: false |
| |
| required: |
| - compatible |
| |
| unevaluatedProperties: false |
| |
| examples: |
| - | |
| sound-ak4458 { |
| compatible = "fsl,imx-audio-card"; |
| model = "ak4458-audio"; |
| pri-dai-link { |
| link-name = "akcodec"; |
| format = "i2s"; |
| fsl,mclk-equal-bclk; |
| cpu { |
| sound-dai = <&sai1>; |
| }; |
| codec { |
| sound-dai = <&ak4458_1>, <&ak4458_2>; |
| }; |
| }; |
| fe-dai-link { |
| link-name = "HiFi-ASRC-FE"; |
| format = "i2s"; |
| cpu { |
| sound-dai = <&easrc>; |
| }; |
| }; |
| be-dai-link { |
| link-name = "HiFi-ASRC-BE"; |
| format = "dsp_b"; |
| dai-tdm-slot-num = <8>; |
| dai-tdm-slot-width = <32>; |
| fsl,mclk-equal-bclk; |
| cpu { |
| sound-dai = <&sai1>; |
| }; |
| codec { |
| sound-dai = <&ak4458_1>, <&ak4458_2>; |
| }; |
| }; |
| }; |
