[maemo-developers] Frequencies scaling with OS2008

[From: Klaus.K Pedersen (Nokia-M/Helsinki)]

On Wed, 2008-01-02 at 13:30 +0100, ext Frantisek Dufka wrote:
> Igor Stoppa wrote:
> > On Mon, 2007-12-31 at 17:37 +0100, ext Frantisek Dufka wrote:
> >> Igor Stoppa wrote:
> >>> Having the audio path open, but no dsp tack loaded (arm audio) sets the
> >>> clock to 400MHz.
> >> Interesting, so, umm, there is way to play audio from ARM side directly? 
> > 
> > Mixing is still happening on DSP.
> >
> 
> I see so DSP is running fully but there is no dynamic task loaded so the 
> multimedia requirements are low and it can run at 400/133, right? 

So what you are seeing is that the "DSP task policy" is active even
though there are no dynamic dsp task loaded?

I guess that you are running with your own kernel, build from
http://repository.maemo.org/pool/chinook/free/source/k/kernel-source-rx-34 ?

As discussed in other threads -- this kernel is not really state of the
art :-(

Please try to see weather applying the attached patch(*) solve your
problem. 


BR, Klaus

* The patch have been extracted from the kernel that shipped in OS2008.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: task-fixes.patch
Type: text/x-patch
Size: 2244 bytes
Desc: not available
Url : http://lists.maemo.org/pipermail/maemo-developers/attachments/20080103/02080d52/attachment.bin