Messages in this thread | | | From | Aidan MacDonald <> | Subject | Re: [PATCH v1 2/2] dt-bindings: ASoC: simple-card: Add system-clock-id property | Date | Wed, 26 Oct 2022 15:48:21 +0100 |
| |
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> writes:
> And the remaining piece I don't get is that these are not bindings for > codec, but for sound audio card. You want to set "system-clock-id" > property for audio card, while putting clock from codec, which will be > used to pass back to the codec... so it is a property of the codec, not > of the audio card. IOW, NAU8821_CLK_* does not configure here the clock > of the system, but only, only clock of the codec.
The system clock is controlled at the DAI level, it's specific to one DAI on one component. The simple-card device node has sub-nodes for the DAI links, and each DAI link node has sub-nodes for the DAIs within the link. "system-clock-id" is a property on the DAI nodes, so it's not a card-level property, just one part of the overall card definition.
Since the clock ID is something defined by the codec it would naturally be a value defined by the codec, but the *configuration* of the codec is part of the sound card because it depends on how everything is connected together. If you used the same codec in a different machine it would have a different configuration.
Regards, Aidan
| |