DSP Overclock - Help
 

Have been searching the forum intensely the last few days,haven't found it.
How do i overclock the dsp on the n900? I need to watch some h264 movie and it's a bit laggy.

Re: DSP Overclock - Help
 

maybe you shoud say the device

Re: DSP Overclock - Help
 

sudo gainroot
cp /usr/share/kernel-power-settings/dsp /home/user/coslp01.txt
leafpad /home/user/coslp01.txt
you see somthing like this:
# DO NOT EDIT THIS FILE - CREATE A COPY OF IT FOR CUSTOMIZATION
# minimum frequency to use
MINFREQ=500
# maximum frequency to use
MAXFREQ=900
# list of frequency configurations: each "frequency:volt,dsprate"
FREQS="0:30,90 125:30,90 250:38,180 500:48,360 550:54,400 600:60,430 720:60,520 805:60,600 850:60,600 900:60,600 950:60,600 1000:60,600 1100:72,600 1150:72,600"
SMARTREFLEX_VDD1=1
SMARTREFLEX_VDD2=1
GOVERNOR=ondemand
UP_THRESHOLD=95
SAMPLING_RATE=300000
IGNORE_NICE_LOAD=0
POWERSAVE_BIAS=0
copy above settings in your coslp01.txt and then save from menu on leafpad
open again x-terminal:
sudo gainroot
cp coslp01.txt /etc/default/kernel-power
exit
/usr/sbin/kernel-config load
restart n900
done

Re: DSP Overclock - Help
 

shouldn't i set a frequency somewhere?
i remember i have read about overclocking the dsp with some echo commands in xterm

Re: DSP Overclock - Help
 

see the FREQ lines?

exemple: 850:60,600

850= CPU freq
60= CPU voltage lvl
600 = dsp freq

But dsp freq @ 600 seems to be the max. you may be able to go further, but it is at your own risks!

Re: DSP Overclock - Help
 

why not just simply load dsp profile ?

root
kernel-config load dsp

simple. whenever you will restart you N900 default profile will be loaded and you have to load dsp profile again.

Re: DSP Overclock - Help
 

thanks all

Re: DSP Overclock - Help
 

also after loading dsp try this kernel-config lock 805 it will lock the frequency :)

Re: DSP Overclock - Help
 

Is this equivalent to setting both limits to 805?

Re: DSP Overclock - Help
 

yes. this will lock cpu at 805 mhz. but be careful. if you lock it for too long this might damage your N900 as N900's own maximum is 600.