From: Mark Brown <broonie@kernel.org>
To: Shengjiu Wang <shengjiu.wang@gmail.com>
Cc: alsa-devel@alsa-project.org, Lars-Peter Clausen <lars@metafoo.de>,
Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
Matt Flax <flatmax@flatmax.org>
Subject: Re: ASoc: soc_core.c stream direction from snd_soc_dai
Date: Fri, 26 Feb 2021 17:06:25 +0000 [thread overview]
Message-ID: <20210226170624.GA4518@sirena.org.uk> (raw)
In-Reply-To: <CAA+D8AN--agWZpcmsCrAD2OtMAEZxsr+41S1m8UNxynjdV0f+w@mail.gmail.com>
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On Fri, Feb 26, 2021 at 01:58:12PM +0800, Shengjiu Wang wrote:
> On Tue, Feb 23, 2021 at 9:58 PM Mark Brown <broonie@kernel.org> wrote:
> > I'm not sure having two DAIs is an issue if you have them running the
> > smae format - does it cause any practical problems or is it just that it
> > doesn't seem elegant to you? There were quite a few devices that pretty
> > much just had two unidirectional DAIs, in those cases it seems like a
> > sensible representation for the hardware. If you can set unrelated
> > formats on transmit and receive then it's not clear that it's actually
> > the same DAI in anything except logical labelling.
> When an i2s device, Sometimes it is connected as async mode, there is
> different clock for tx and rx then there should be two DAIs, Sometimes
> it is connected as sync mode, then there should be one DAI.
> So we need to register different DAIs according to the async or sync mode
> when the driver probes. right?
You should just be able to connect the same device twice for the other
end of the link, once for Tx and once for Rx.
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prev parent reply other threads:[~2021-02-26 17:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-11 22:54 ASoc: soc_core.c stream direction from snd_soc_dai Matt Flax
2020-03-12 22:55 ` Pierre-Louis Bossart
2020-03-12 23:19 ` Matt Flax
2020-03-13 3:56 ` Matt Flax
2020-03-13 9:59 ` Lars-Peter Clausen
2021-02-20 9:29 ` Shengjiu Wang
2021-02-23 13:57 ` Mark Brown
2021-02-26 5:58 ` Shengjiu Wang
2021-02-26 17:06 ` Mark Brown [this message]
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