Re: [alsa-devel] [PATCH] ASoC: simple-card: overwrite DAIFMT_MASTER of cpu_dai->fmt

From: Kuninori Morimoto
Date: Wed Mar 12 2014 - 00:01:15 EST



Hi Nicolin

> > static struct asoc_simple_card_info fsi_wm8978_info = {
> > ...
> > .daifmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM,
> > .cpu_dai = {
> > ...
> > .fmt = SND_SOC_DAIFMT_IB_NF,
> > },
> > .codec_dai = {
> > ...
> > .fmt = SND_SOC_DAIFMT_NB_NF,
> > },
> > };
>
> This would be better imo.
>
> And ideally we should also keep the xB_xF identical like Mark said _identical_.
> Just some cpu dai drivers might do an incorrect settings for it, like regarding
> NB as sampling on rising edge and IF as active low (I'm saying this without a
> careful check though), which results people need to re-set bitclock-invert and
> frame-invert if they switch the DAI format from left_j to i2s for example.

Wow... I had misunderstood...
I need to send fixup patch after lunch.
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