diff options
Diffstat (limited to 'Documentation/devicetree/bindings/sound')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml | 41 |
1 files changed, 35 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml b/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml index b522ed7dcc51..a23e49198c37 100644 --- a/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml +++ b/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml @@ -12,7 +12,9 @@ maintainers: description: | The QMC audio is an ASoC component which uses QMC (QUICC Multichannel Controller) channels to transfer the audio data. - It provides as many DAI as the number of QMC channel used. + It provides several DAIs. For each DAI, the DAI is working in interleaved mode + if only one QMC channel is used by the DAI or it is working in non-interleaved + mode if several QMC channels are used by the DAI. allOf: - $ref: dai-common.yaml# @@ -45,12 +47,19 @@ patternProperties: fsl,qmc-chan: $ref: /schemas/types.yaml#/definitions/phandle-array items: - - items: - - description: phandle to QMC node - - description: Channel number + items: + - description: phandle to QMC node + - description: Channel number + minItems: 1 description: - Should be a phandle/number pair. The phandle to QMC node and the QMC - channel to use for this DAI. + Should be a phandle/number pair list. The list of phandle to QMC node + and the QMC channel pair to use for this DAI. + If only one phandle/number pair is provided, this DAI works in + interleaved mode, i.e. audio channels for this DAI are interleaved in + the QMC channel. If more than one pair is provided, this DAI works + in non-interleave mode. In that case the first audio channel uses the + the first QMC channel, the second audio channel uses the second QMC + channel, etc... required: - reg @@ -79,6 +88,11 @@ examples: reg = <17>; fsl,qmc-chan = <&qmc 17>; }; + dai@18 { + reg = <18>; + /* Non-interleaved mode */ + fsl,qmc-chan = <&qmc 18>, <&qmc 19>; + }; }; sound { @@ -115,4 +129,19 @@ examples: dai-tdm-slot-rx-mask = <0 0 1 0 1 0 1 0 1>; }; }; + simple-audio-card,dai-link@2 { + reg = <2>; + format = "dsp_b"; + cpu { + sound-dai = <&audio_controller 18>; + }; + codec { + sound-dai = <&codec3>; + dai-tdm-slot-num = <2>; + dai-tdm-slot-width = <8>; + /* TS 9, 10 */ + dai-tdm-slot-tx-mask = <0 0 0 0 0 0 0 0 0 1 1>; + dai-tdm-slot-rx-mask = <0 0 0 0 0 0 0 0 0 1 1>; + }; + }; }; |