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Poll: Do you think its possible to overclock the N900?!
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Do you think its possible to overclock the N900?!

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AlMehdi is offline AlMehdi
2010-04-12 , 23:17
Posts: 1,751 | Thanked: 844 times | Joined on Feb 2010 @ Sweden
#2551
I have noticed a strange fault.. I get a reboot when trying 250-850-xlv-maemo21 and 250-900-xlv-maemo21 but it's stable at 250-810-xlv-maemo21 and 250-950-xlv-maemo21.

I would guess it has with the voltage settings but as i understand it.. the 810 is on low voltage, the 850 is on normal voltage and the 900 is on the same as 950 which is overvoltage. It is strange it works good on 950 but not 900 as they are on the same voltage.
 
rooted is offline rooted
2010-04-12 , 23:21
Posts: 156 | Thanked: 90 times | Joined on Jan 2010
#2552
Can you also provide tables of the voltages you use in LV and ULV kernels?
 
jayjayn is offline jayjayn
2010-04-12 , 23:22
Posts: 9 | Thanked: 1 time | Joined on Feb 2010
#2553
thx for the info im using the temp method and didnt change the pmconfig.. but now im using the

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq

and its showing up 800000 even though i have not exectuted the code and have already rebooted it.. so is the kernal i installed already overclocking i installed the ULV CPU: 250mhz / 375mhz / 500mhz / 800mhz / ((1000mhz))
DSP: 90mhz / 180mhz / 360mhz/ 400mhz / 460mhz

and im also using the Desktop Command Execution Widget to execute a different speed such as 500000 and its not changing the max.. and i dont have other execution widgets with the same code..
 
arbitrabbit is offline arbitrabbit
2010-04-12 , 23:22
Posts: 171 | Thanked: 114 times | Joined on Feb 2010
#2554
Originally Posted by titan View Post
the customizable voltage kernel is ready:
Code:
# cat /sys/power/sr_vdd1_opps_vsel
30 30 38 48 54 48 60 60 60 60 60 60 60 67 72
echo "30 30 38 48 54 48 60 60 60 60 60 60 60 67 72" > /sys/power/sr_vdd1_opps_vsel
The meaning of the voltages (first column):
Code:
stock/normal kernel
30 = 0x1e = 0.975V x 0 MHz = 0
XLV kernel:
30 = 0x1e = 0.975V x 0 MHz = 0
I have verified that the customized voltages are actually used.
feel free to play with it.
I'm now uploading it to extras-devel.
Do you need this? OPP1 is the voltage at 125MHz so why do you need a 0MHz voltage as it is not going to change anything? I also notice that you have nudged the voltages up compared to ideal. Did that fix your reboot issue? (though of course, given that everything is configurable, it doesn't really matter)
Last edited by arbitrabbit; 2010-04-12 at 23:29.
 
moshikko is offline moshikko
2010-04-12 , 23:24
Posts: 22 | Thanked: 15 times | Joined on Apr 2010 @ Israel
#2555
Originally Posted by AlMehdi View Post
Start with the max_freq on 810mhz and then test the other frequencies with the "temp command". That is how i did it. I have noticed it can be unstable for me on the higher frequencies.
went back to the 810Mhz and works fine for web surffing video playing and etc.
guess you were right any higher than that it reboots itself or the device just lags simple tasks
thanks
gonna stick to 810Mhz XLV
 
titan is offline titan
2010-04-12 , 23:31
Posts: 946 | Thanked: 1,650 times | Joined on Oct 2009 @ Germany
#2556
Originally Posted by arbitrabbit View Post
Do you need this? OPP1 is the voltage at 125MHz so why do you need a 0MHz voltage as it is not going to change anything? I also notice that you have nudged the voltages up compared to ideal. Did that fix your reboot issue? (though of course, given that everything is configurable, it doesn't really matter)
it's included in the stock table. don't know whether it has any effect.
 
baron von bubba is offline baron von bubba
2010-04-12 , 23:32
Posts: 255 | Thanked: 109 times | Joined on Dec 2009
#2557
67 = 0x43 = 1.438V x 1100 MHz = 2273
72 = 0x48 = 1.500V x 1150 MHz = 2588

ahha, so this would explain why i couldnt run psx4all at 1100 but it runs ok at 1150!
 
AlMehdi is offline AlMehdi
2010-04-13 , 00:07
Posts: 1,751 | Thanked: 844 times | Joined on Feb 2010 @ Sweden
#2558
Originally Posted by moshikko View Post
went back to the 810Mhz and works fine for web surffing video playing and etc.
guess you were right any higher than that it reboots itself or the device just lags simple tasks
thanks
gonna stick to 810Mhz XLV
Try the 950mhz.. it worked for me.
 
AlMehdi is offline AlMehdi
2010-04-13 , 00:11
Posts: 1,751 | Thanked: 844 times | Joined on Feb 2010 @ Sweden
#2559
Titan: I updated and tried the new kernel from the extra-devel repo. Not booting. The settings in /etc/pmconfig should not make a problem right? Have no clue why this happen.. used the 250-810-xlv-kernel prior this.
Last edited by AlMehdi; 2010-04-13 at 00:27.
 
rooted is offline rooted
2010-04-13 , 00:16
Posts: 156 | Thanked: 90 times | Joined on Jan 2010
#2560
titan: why does scaling_min_freq still gets overridden to 125000 after a phone call, but max_freq doesn't? I'm using latest ulv kernel. I think you should disable this like it is disabled for max_freq.
 
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