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Message-ID: <20140807094404.GB3088@MrMyself>
Date: Thu, 7 Aug 2014 17:44:05 +0800
From: Nicolin Chen <Guangyu.Chen@...escale.com>
To: Mark Brown <broonie@...nel.org>
CC: Nicolin Chen <nicoleotsuka@...il.com>,
<linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
<alsa-devel@...a-project.org>, <timur@...i.org>,
<Li.Xiubo@...escale.com>, <devicetree@...r.kernel.org>,
<galak@...eaurora.org>, <ijc+devicetree@...lion.org.uk>,
<mark.rutland@....com>, <pawel.moll@....com>, <robh+dt@...nel.org>,
<b42378@...escale.com>, <b02247@...escale.com>
Subject: Re: [PATCH] ASoC: fsl_sai: Add asynchronous mode support
On Thu, Aug 07, 2014 at 10:45:27AM +0100, Mark Brown wrote:
> On Tue, Aug 05, 2014 at 03:32:05PM +0800, Nicolin Chen wrote:
> > From: Nicolin Chen <Guangyu.Chen@...escale.com>
> >
> > SAI supports these operation modes:
> > 1) asynchronous mode
> > Both Tx and Rx are set to be asynchronous.
> > 2) synchronous mode (Rx sync with Tx)
> > Tx is set to be asynchronous, Rx is set to be synchronous.
> > 3) synchronous mode (Tx sync with Rx)
> > Rx is set to be asynchronous, Tx is set to be synchronous.
> > 4) synchronous mode (Tx/Rx sync with another SAI's Tx)
> > 5) synchronous mode (Tx/Rx sync with another SAI's Rx)
>
> This seems to conflict with something else on my branch - not checked
> what. Can you take a look please?
Ah...there is another patch that should haven been merged into for-next
is currently missing on the remote branch.
This one:
http://mailman.alsa-project.org/pipermail/alsa-devel/2014-August/079689.html
> > +Note:
> > +- If both fsl,sai-asynchronous and fsl,sai-synchronous-rx are absent, the
> > + default synchronous mode (sync Rx with Tx) will be used, which means both
> > + transimitter and receiver will send and receive data by following clocks
> > + of transimitter.
> > +- fsl,sai-asynchronous will be ignored if fsl,sai-synchronous-rx property is
> > + already present.
>
> Might be worth printing an error here.
Hmm...Do I need to send a v2?
Thank you
Nicolin
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