linux-kernel - Re: [PATCH 2/3] ASoC: tas571x: New driver for TI TAS571x power amplifiers

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Message-ID: <20150424165038.GS22845@sirena.org.uk>
Date:	Fri, 24 Apr 2015 17:50:38 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Kevin Cernekee <cernekee@...omium.org>
Cc:	Liam Girdwood <lgirdwood@...il.com>, dgreid@...omium.org,
	Andrew Bresticker <abrestic@...omium.org>,
	Olof Johansson <olofj@...omium.org>,
	alsa-devel@...a-project.org, devicetree@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Lars-Peter Clausen <lars@...afoo.de>
Subject: Re: [PATCH 2/3] ASoC: tas571x: New driver for TI TAS571x power
 amplifiers

On Fri, Apr 24, 2015 at 06:52:01AM -0700, Kevin Cernekee wrote:
> On Fri, Apr 24, 2015 at 2:28 AM, Mark Brown <broonie@...nel.org> wrote:

> > Do you need to work around it?  If the register map is being perserved
> > you don't need to sync so just don't do it - it's just that the normal
> > expectation would be that power down would cause the register map to be
> > reset.

> How do I tell regcache to write out any updates that happened while
> the hardware was inaccessible?  I see that regmap->cache_dirty is 1,
> but nothing flushes it automatically when exiting cache_only mode.

Oh, I see.  A sync will be required, yes.  Probably resetting the device
is easiest.

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