[alsa-devel] [RFC 0/2] soc-dapm or TWL4030: Runtime DAPM ordering problem

Mark Brown broonie at opensource.wolfsonmicro.com
Tue Aug 3 17:02:54 CEST 2010

On Tue, Aug 03, 2010 at 12:09:10PM +0300, Peter Ujfalusi wrote:
> On Tuesday 03 August 2010 11:39:44 ext Mark Brown wrote:

> > I think there's something useful we can do with DAPM here (independantly
> > of anything in TWL4030), probably involving splitting up the routing
> > change walk to run power down first and then power up but the current
> > patch feels like it's going to cause at least as many problems as it
> > solves.

> I tend to agree. The patch for the core is quite dramatic change, and it can 
> introduce other types of problems.
> But... It would make the actual register write sequence consistent in all cases.

The power and route configuration settings aren't really part of the
same sequence, though - other widgets can also trigger power changes,
and obviously a route change need not imply a power change.

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