[alsa-devel] [PATCH 2/4] pxa2xx-i2s: Handle SACR1_DRPL and SACR1_DREC separately

Karl Beldan karl.beldan at gmail.com
Tue May 12 11:59:03 CEST 2009

Mark Brown wrote:
> On Tue, May 12, 2009 at 12:00:33AM +0200, Karl Beldan wrote:
>> Then it is perfectly normal since reset enables both REC and RPL, 2/4 needs 1/4.
>> The current tree disables the clocks anytime one function is disabled.
> That doesn't seem to tie up - I can see the initialisation changing the
> behaviour on first run but it seems surprising that this should happen
> on subsequent runs too.  Alternatively, is your initialisation patch
> safe to apply by itself?
Well 2/4 stops the clocks only if both REC and RPL are disabled.
Without 1/4 you end up with REC enabled at startup.
In a scenario where you have never used REC you end up RPLing with REC always on.
REC being on at shutdown(),clocks won't stop.

>> I resent 1/4 and will make it 1/5 with the whole serie once everything is Clear.
> As previously discussed you need to rework the patch to not do the reset
> on initial probe not when the module is loaded, you need to address this
> rather than reposting.
The patch in question is moving the reset in probe rather than module init - with comment updated.
What is wrong ?

> I'll try to find time to re-review the series but I'm going to need to
> sit down with the datasheet and check this in much more detail.
For 1/4 and 2/4 there should not be great need, Really.


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