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Posts: 17 | Thanked: 3 times | Joined on Jul 2013 @ Focsani, Romania
#1
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.

Last edited by coslp01; 2013-08-27 at 11:22. Reason: forgot essential detail
 
lorenzo's Avatar
Posts: 491 | Thanked: 299 times | Joined on Jul 2012 @ Pordenone IT
#2
maybe you shoud say the device
 
Posts: 238 | Thanked: 131 times | Joined on May 2011 @ Bulgaria
#3
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
 

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Posts: 17 | Thanked: 3 times | Joined on Jul 2013 @ Focsani, Romania
#4
Originally Posted by disappear View Post
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
shouldn't i set a frequency somewhere?
i remember i have read about overclocking the dsp with some echo commands in xterm
 
Posts: 236 | Thanked: 223 times | Joined on Apr 2011 @ switzerland
#5
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!
 

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panjgoori's Avatar
Posts: 1,236 | Thanked: 1,278 times | Joined on Aug 2011 @ Balochistan
#6
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.
 

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Posts: 17 | Thanked: 3 times | Joined on Jul 2013 @ Focsani, Romania
#7
thanks all
 
nokiabot's Avatar
Posts: 1,974 | Thanked: 1,834 times | Joined on Mar 2013 @ india
#8
also after loading dsp try this kernel-config lock 805 it will lock the frequency
 
Posts: 17 | Thanked: 3 times | Joined on Jul 2013 @ Focsani, Romania
#9
Originally Posted by nokiabot View Post
also after loading dsp try this kernel-config lock 805 it will lock the frequency
Is this equivalent to setting both limits to 805?
 
panjgoori's Avatar
Posts: 1,236 | Thanked: 1,278 times | Joined on Aug 2011 @ Balochistan
#10
Originally Posted by coslp01 View Post
Is this equivalent to setting both limits to 805?
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.
 

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