[KERNEL] 7 June 2011 - Froyo OC/UV Kernel

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Cpasjuste

Senior Member
Jun 8, 2007
962
1,358
Hi there !

Got my Optimus 2x yesterday, and played with it today :)
So here is a modified kernel compatible with MoDaCo roms. This kernel will boot with stock values (1000mhz max, default voltage). You can then enable higher states (1200, 1300mhz) with "Pimp My Cpu"! But you can also lower the voltage to get the best of your device Be sure to read the "Pimp My Cpu" post to understand how it work.

  • Try at your own risk ! May be unstable, i'm not responsable for any damage ... etc
  • Kernel developpers, you can find some informations on how all this work here.


  • 7 June 2011 : 2x-kernel-2.6.32.9-fakeShmoo(-psycho)-cpasjuste.8.zip
    • Fix Wifi
    • MD5 : 55065e28efbd33995c6d6d1bb9f20287
    • PSYCHO MD5 : 492b150e14f6a7922ec9dcadb432f27b

  • 15 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-psycho-cpasjuste.5.zip
    • Same as "2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.5" but with higher overclocking (not recommended), see below.
    • MD5 : 168a51f4d26f272a29607824b6077784

  • 14 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.5.zip
    • I did successfully add 216 Mhz frequency to the kernel, but there's a bad news. I did found a hardware limit on the max8907 controller : voltages cant be lower than 770mV. It's why the stock LG kernel runs at 300 Mhz for it's minimal frequency, it run fine at 770mV. So this means that any undervolting lower then 770mV wont do anything, it will still run at 770mV...
    • Taking the previous discover in account, i didn't add the 216 Mhz state but replaced the (really) too hot 1300 Mhz state by a 1100 Mhz one, so you can probably use that without overvolting (unlike the 1200 Mhz state).
    • I probably fixed the non booting problem on some roms by adding the required "init.d" script in the zip update package.
    • MD5 : 514be18ced541f953cc15a1a0e995ea6
    • Be sure to REMOVE "boot settings" from "Pimp My Cpu" AND uninstall "Pimp My Cpu" before installing the kernel to reset default values.

  • 12 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.4.zip
    • A few fix on the oc/uv code which could improve stability
    • Now use an "unified" cpufreq sysfs devices name. I mean it use the same sysfs names than other oc/uv kernels (at least Galaxy i9000 ones). You HAVE to update "Pimp My Cpu" to version 2.1 at least for it to work.
    • Cpu sensor is now "/sys/devices/system/cpu/cpu0/cpufreq/cpu_temp"
    • Freq/voltage table is now "/sys/devices/system/cpu/cpu0/cpufreq/frequency_voltage_table" like other kernels. See this post for more informations.
    • Uv/mV table is now "/sys/devices/system/cpu/cpu0/cpufreq/UV_mV_table". See this post for more information.
    • Need Pimp My Cpu version 2.1 at least.

  • 11 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.3.zip
    • Back to "normal" releases (with more frequency steps added)
    • Lower 1200/1300 Mhz voltages, as nvidia recommand 100mV max voltage change between two steps. May not be stable for all.
    • Maybe fixed some bugs added by the OC/UV modification (some references to old freq/voltage table was still around)
    • Probably last kernel from me, dev's now have the necessary resources on my github to play around :)
    • Be sure to REMOVE "boot settings" from "Pimp My Cpu" AND uninstall "Pimp My Cpu" before installing the kernel to reset default values.

  • 10 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.2.zip
    • Test release, try to be as close as possible to the default LG kernel
    • Now based on new kernel sources released by LG instead paul sources
    • Only 6 available frequency like LG stock kernel (could prevent some problems)
    • Maybe fixed some bugs added by the OC/UV modification (some references to old freq/voltage table was still around)
    • Be sure to REMOVE "boot settings" from "Pimp My Cpu" AND uninstall "Pimp My Cpu" before installing the kernel to reset default values.

  • 9 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.1.zip
    • Added cpu sensor ( "/sys/devices/system/cpu/cpu0/cpufreq/FakeShmoo_cpu_temp" )
    • Added freq/voltage table ( "/sys/devices/system/cpu/cpu0/cpufreq/FakeShmoo_freq_voltage_table" ), see this post for more information.
    • Added uv/mv table ( "/sys/devices/system/cpu/cpu0/cpufreq/FakeShmoo_UV_mV_table" ), see this post for more information.
    • Changed unstable 1400Mhz frequency to 1300Mhz (we can't have more than 8 freqency)
    • Added "init.d" support to be 100% compatible with "Pimp My Cpu"
    • Be sure read the "Pimp My Cpu" changes which may interest you :)


  • Installation :
    • Copy the zip to external SDCARD
    • Boot to ClockWorkMod Recovery (power button + volum down)
    • Choose install zip from sdcard
    • Select the zip

  • Recommendations
    • Nvidia tegra 2 (AP20) drivers as set the maximum allowed temperature to 60°, you should maybe not go further.
    • Nvidia tegra 2 (AP20) drivers recommend maximum voltages step of +-100mV (+-100mV between two frequency)
    • Cpu temperatures are already high without OC. After a lot of testing, i would not recommend to OC this device, but for sure undervolt it.


  • Default LG values :
    • 389 Mhz / 750 mV
    • 503 Mhz / 800 mV
    • 655 Mhz / 850 mV
    • 760 Mhz / 875 mV
    • 950 Mhz / 950 mV
    • 1015 Mhz /1000 mV

  • 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.5/6/7 values :
    • 300 Mhz / 770 mV
    • 500 Mhz / 800 mV
    • 650 Mhz / 850 mV
    • 750 Mhz / 875 mV
    • 900 Mhz / 950 mV
    • 1000 Mhz / 1000 mV
    • 1100 Mhz / 1100 mV
    • 1200 Mhz / 1150 mV

  • 2x-kernel-2.6.32.9-fakeShmoo-psycho-cpasjuste.5/6/7 values :
    • 300 Mhz / 770 mV
    • 500 Mhz / 800 mV
    • 800 Mhz / 900 mV
    • 1000 Mhz / 1000 mV
    • 1100 Mhz / 1100 mV
    • 1200 Mhz / 1150 mV
    • 1300 Mhz / 1200 mV
    • 1400 Mhz / 1250 mV


Enjoy your (very) fast device :)

- Thanks to xan for his OC/UV application which inspired me, paul for his work on the o2x and all the users here ;)
- Github
 

Attachments

  • 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.5.zip
    4.5 MB · Views: 3,912
  • 2x-kernel-2.6.32.9-fakeShmoo-psycho-cpasjuste.5.zip
    4.5 MB · Views: 4,614
  • 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.8.zip
    4.5 MB · Views: 1,116
  • 2x-kernel-2.6.32.9-fakeShmoo-psycho-cpasjuste.8.zip
    4.5 MB · Views: 2,315
Last edited:

Cpasjuste

Senior Member
Jun 8, 2007
962
1,358
does it work to flash through recovery with the 2 zip files you attached?

edit: seems that I have to push them but I'll wait for a update.zip :D

Nope you have to follow the step here :/
Does someone have a update.zip template ?
For overvolting, i would need to find a way or know default voltage values, i'll take a look this week.
 
Last edited:
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Reactions: peacekeeper05

Cpasjuste

Senior Member
Jun 8, 2007
962
1,358
I did found the original voltages so i would be able to change them without doing a mistake :)


<4>[ 16.247059] TEGRA_OC : voltage[0]->750
<4>[ 16.247070] TEGRA_OC : voltage[1]->800
<4>[ 16.247077] TEGRA_OC : voltage[2]->850
<4>[ 16.247082] TEGRA_OC : voltage[3]->875
<4>[ 16.247088] TEGRA_OC : voltage[4]->950
<4>[ 16.247094] TEGRA_OC : voltage[5]->1000
 

[email protected]

Senior Member
Jan 15, 2009
2,439
545
Stockholm
I did found the original voltages so i would be able to change them without doing a mistake :)


<4>[ 16.247059] TEGRA_OC : voltage[0]->750
<4>[ 16.247070] TEGRA_OC : voltage[1]->800
<4>[ 16.247077] TEGRA_OC : voltage[2]->850
<4>[ 16.247082] TEGRA_OC : voltage[3]->875
<4>[ 16.247088] TEGRA_OC : voltage[4]->950
<4>[ 16.247094] TEGRA_OC : voltage[5]->1000

then give us 1,5GHz... LOL :D
 

T1MS0N

Member
Aug 9, 2010
11
1
It also seems that MoDaCo kernel do NOT have the 2 cores enabled (not sure of that), cpuinfo report only 1 processor while "my" kernel reports two.

Negative, CPU-Info seems not to be able to detect two CPU-Cores. At my Device it shows 1998 MHz ... So it seems that with the Modaco Kernel both CPU-Cores are working :)

BTW. Great Work
 
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Reactions: destilant

djmcnz

Retired Recognized Developer
Oct 13, 2009
5,691
1,640
Auckland, NZ
I think this one is good without an update.zip at the moment.

As it rightly says in the OP this is for advanced users only, an update.zip will simply tempt everybody to have a go. In my opinion, until it's been tested a bit more it's best kept amongst the few.

Having said that, top shelf... 3105!
 

Cpasjuste

Senior Member
Jun 8, 2007
962
1,358
Hehe thanks for the support :)

Actually i'm unable to get a stable 1200mhz even with overvolting so maybe something else is happening. I'll try to have a stable 1200mhz before releasing a new update. I also got 1400hz but unstable too :

 

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  • 27
    Hi there !

    Got my Optimus 2x yesterday, and played with it today :)
    So here is a modified kernel compatible with MoDaCo roms. This kernel will boot with stock values (1000mhz max, default voltage). You can then enable higher states (1200, 1300mhz) with "Pimp My Cpu"! But you can also lower the voltage to get the best of your device Be sure to read the "Pimp My Cpu" post to understand how it work.

    • Try at your own risk ! May be unstable, i'm not responsable for any damage ... etc
    • Kernel developpers, you can find some informations on how all this work here.


    • 7 June 2011 : 2x-kernel-2.6.32.9-fakeShmoo(-psycho)-cpasjuste.8.zip
      • Fix Wifi
      • MD5 : 55065e28efbd33995c6d6d1bb9f20287
      • PSYCHO MD5 : 492b150e14f6a7922ec9dcadb432f27b

    • 15 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-psycho-cpasjuste.5.zip
      • Same as "2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.5" but with higher overclocking (not recommended), see below.
      • MD5 : 168a51f4d26f272a29607824b6077784

    • 14 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.5.zip
      • I did successfully add 216 Mhz frequency to the kernel, but there's a bad news. I did found a hardware limit on the max8907 controller : voltages cant be lower than 770mV. It's why the stock LG kernel runs at 300 Mhz for it's minimal frequency, it run fine at 770mV. So this means that any undervolting lower then 770mV wont do anything, it will still run at 770mV...
      • Taking the previous discover in account, i didn't add the 216 Mhz state but replaced the (really) too hot 1300 Mhz state by a 1100 Mhz one, so you can probably use that without overvolting (unlike the 1200 Mhz state).
      • I probably fixed the non booting problem on some roms by adding the required "init.d" script in the zip update package.
      • MD5 : 514be18ced541f953cc15a1a0e995ea6
      • Be sure to REMOVE "boot settings" from "Pimp My Cpu" AND uninstall "Pimp My Cpu" before installing the kernel to reset default values.

    • 12 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.4.zip
      • A few fix on the oc/uv code which could improve stability
      • Now use an "unified" cpufreq sysfs devices name. I mean it use the same sysfs names than other oc/uv kernels (at least Galaxy i9000 ones). You HAVE to update "Pimp My Cpu" to version 2.1 at least for it to work.
      • Cpu sensor is now "/sys/devices/system/cpu/cpu0/cpufreq/cpu_temp"
      • Freq/voltage table is now "/sys/devices/system/cpu/cpu0/cpufreq/frequency_voltage_table" like other kernels. See this post for more informations.
      • Uv/mV table is now "/sys/devices/system/cpu/cpu0/cpufreq/UV_mV_table". See this post for more information.
      • Need Pimp My Cpu version 2.1 at least.

    • 11 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.3.zip
      • Back to "normal" releases (with more frequency steps added)
      • Lower 1200/1300 Mhz voltages, as nvidia recommand 100mV max voltage change between two steps. May not be stable for all.
      • Maybe fixed some bugs added by the OC/UV modification (some references to old freq/voltage table was still around)
      • Probably last kernel from me, dev's now have the necessary resources on my github to play around :)
      • Be sure to REMOVE "boot settings" from "Pimp My Cpu" AND uninstall "Pimp My Cpu" before installing the kernel to reset default values.

    • 10 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.2.zip
      • Test release, try to be as close as possible to the default LG kernel
      • Now based on new kernel sources released by LG instead paul sources
      • Only 6 available frequency like LG stock kernel (could prevent some problems)
      • Maybe fixed some bugs added by the OC/UV modification (some references to old freq/voltage table was still around)
      • Be sure to REMOVE "boot settings" from "Pimp My Cpu" AND uninstall "Pimp My Cpu" before installing the kernel to reset default values.

    • 9 Apr 2011 : 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.1.zip
      • Added cpu sensor ( "/sys/devices/system/cpu/cpu0/cpufreq/FakeShmoo_cpu_temp" )
      • Added freq/voltage table ( "/sys/devices/system/cpu/cpu0/cpufreq/FakeShmoo_freq_voltage_table" ), see this post for more information.
      • Added uv/mv table ( "/sys/devices/system/cpu/cpu0/cpufreq/FakeShmoo_UV_mV_table" ), see this post for more information.
      • Changed unstable 1400Mhz frequency to 1300Mhz (we can't have more than 8 freqency)
      • Added "init.d" support to be 100% compatible with "Pimp My Cpu"
      • Be sure read the "Pimp My Cpu" changes which may interest you :)


    • Installation :
      • Copy the zip to external SDCARD
      • Boot to ClockWorkMod Recovery (power button + volum down)
      • Choose install zip from sdcard
      • Select the zip

    • Recommendations
      • Nvidia tegra 2 (AP20) drivers as set the maximum allowed temperature to 60°, you should maybe not go further.
      • Nvidia tegra 2 (AP20) drivers recommend maximum voltages step of +-100mV (+-100mV between two frequency)
      • Cpu temperatures are already high without OC. After a lot of testing, i would not recommend to OC this device, but for sure undervolt it.


    • Default LG values :
      • 389 Mhz / 750 mV
      • 503 Mhz / 800 mV
      • 655 Mhz / 850 mV
      • 760 Mhz / 875 mV
      • 950 Mhz / 950 mV
      • 1015 Mhz /1000 mV

    • 2x-kernel-2.6.32.9-fakeShmoo-cpasjuste.5/6/7 values :
      • 300 Mhz / 770 mV
      • 500 Mhz / 800 mV
      • 650 Mhz / 850 mV
      • 750 Mhz / 875 mV
      • 900 Mhz / 950 mV
      • 1000 Mhz / 1000 mV
      • 1100 Mhz / 1100 mV
      • 1200 Mhz / 1150 mV

    • 2x-kernel-2.6.32.9-fakeShmoo-psycho-cpasjuste.5/6/7 values :
      • 300 Mhz / 770 mV
      • 500 Mhz / 800 mV
      • 800 Mhz / 900 mV
      • 1000 Mhz / 1000 mV
      • 1100 Mhz / 1100 mV
      • 1200 Mhz / 1150 mV
      • 1300 Mhz / 1200 mV
      • 1400 Mhz / 1250 mV


    Enjoy your (very) fast device :)

    - Thanks to xan for his OC/UV application which inspired me, paul for his work on the o2x and all the users here ;)
    - Github
    3
    Well, for the charging "issue", like i said before 1250mV is 250mV higher than stock voltage, so i guess it does a huge battery drain :) By the way, thanks for the stats !

    Else i have good news guys, i did successfully have the tegra "drivers" and cpufreq driver to change the voltage on the fly via sysfs ( /sys/devices/system/cpu/cpu0/cpufreq/FakeShmoo_UV_mV_table ), we will have the perfect OC/UV kernel very soon ;)

    I'll update the code to paul latest kernel version, send him the source and post a new kernel there to test.

    Thanks all :)
    3
    SetCPU problems

    Just put in this http://db.tt/8hEZ1Vj file in /sdcard
    Then open setCPU device selection menu, pick custom frequency

    Sent from my LG-P990 using XDA Premium App
    3
    Good news, i did successfully add a sysfs device based on raspdeed work, this means that we will be able to undervolt directly from the device :)
    2
    My .9 and .36 kernel sources are up now.

    Please note I changed the MCR init.rc in Fr7 (optimised!)

    P

    Thanks paul !

    But finally i'm also uploading the sources, so you'll be able to add the hack or not to your kernel. This should be ready before tonight. I also take your fr8 "init.rc" so it should be fine. Note that on newer kernels i added an "init.d" crappy hack so cpu speed configuration can be restored at boot. If you could add this to your future releases this would prevent me from extracting your rootfs each time :D

    After :
    Code:
    ## Daemon processes to be run by init.
    ##
    service console /system/bin/sh
        console

    I added :
    Code:
    #20110705, "/etc/init.d" wrapper
    service sysinit /system/bin/logwrapper /system/xbin/busybox run-parts /system/etc/init.d
        user root
        oneshot


    Thanks for all :)
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