[alsa-devel] [PATCH] ASoC: sgtl5000: Mark CHIP_ANA_POWER as volatile

Mark Brown broonie at kernel.org
Wed May 8 12:40:11 CEST 2013

On Tue, May 07, 2013 at 05:20:12PM -0300, Fabio Estevam wrote:
> Register CHIP_ANA_POWER (address: 0x0030) contains all of the power down 
> controls for the analog blocks.

> Mark it as a volatile register, so that sgtl5000 can be functional after a
> reset.

Is this register actually volatile - in what situations does the chip
autonomously change its power state?

> Without this patch the following error happens after a audio playback followed
> by a reset:

What is the mechanism by which this change fixes the error you quote?
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