[alsa-devel] Question about SND_SOC_DAIFMT_xB_xF

[Kuninori Morimoto]

Hi Lars

> > r example, if some data format requests that data is sent from "rising edge",
> > but HW send data from "falling edge" in default setting.
> > This case, HW should use inverted edge.
> > Then, should HW send it by SND_SOC_DAIFMT_NB_NF (= based on required format) ?
> > or SND_SOC_DAIFMT_NB_IF (= based on default HW behavior) ?
> 
> The same set of settings passed to snd_soc_dai_set_fmt() must for all 
> drivers result in the same waveforms. Otherwise interoperability is pretty 
> hard to archive. This means the clock invert settings are always be relative 
> to the selected DAI format (I2S, LJ, RJ, ...). The hardware default of the 
> specific IP that the driver was written for does not matter in this case.

OK, I see
Thank you for your explain

Best regards
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Kuninori Morimoto