View Single Post
Posts: 2,152 | Thanked: 1,490 times | Joined on Jan 2006 @ Czech Republic
#9
Originally Posted by TA-t3 View Post
At least posted on itt: http://www.internettablettalk.com/fo...2&postcount=15
quote:
"The most interesting change would probably be to run the system at the (unsupported) configuration ARM@400, DSP@266, which would make it possible to avoid the current weird op selection mechanism."
Also with one line change in kernel you can let the dsp run at 133 and cpu at 400Mhz even when dsp plays audio. So far I tried it with mp3 and dsp at 133 can decode mp3 just fine. Anyone is interested in such kernel? Would be interesting to try some really high bitrate AAC or MP3 media or try VOIP/Skype (which needs both encoder and decoder to run on dsp).

Accordin to Igor dsp needs to run at 220MHz because
The multimedia requirements are very strict and comprise some
almost-unrealistic cases of multiple streams being decoded and mixed.
That's where the extra horsepower is needed
http://lists.maemo.org/pipermail/mae...ry/013604.html
So for 'normal' use cases like playing mp3 the dsp can run at 133MHZ and ARM core at full 400Mhz.
For more details check "Frequencies scaling with OS2008" scattered threads in January archive of maemo-developers.

As for overclocking dsp to 266MHz check the same post linked above. It is a bit dangerous and may need cold flashing when something goes really wrong.
__________________
Newbies click here before posting. Thanks.

If you really need to PM me with troubleshooting question please consider posting it to the forum instead. It is OK to PM me a link to such post then. Thank you.
 

The Following 2 Users Say Thank You to fanoush For This Useful Post: