[KERNEL PATCH] Overclocked kernel 748mhz

**engharat** · 12-02-2010, 12:33 PM

###UPDATE of UPDATE 3 December 2010 ## Mine kernel was not overclocking, but alvaroxer/Beach head kernel does.Very very thanks to him,then! The next links to download refer to his kernel/ dhd.o ###

## UPDATE of 4 December 2010 ## Backflip overclock reached 748 mhz!Yahooo!
##NOTE## To anyone is getting random reboots on 748mhz (like me), it could happen because your phone needs more energy that could receive from battery, so it reboots. So try to put max freq=691 in setCPU (for my bf 691 is rock solid) or try other frequencies until your phone doesn't reboot anymore. When charging the phone should stay stable at 748 mhz.
## UPDATE 6 December 2010 ## At this time, we have three options. For j_rodd rom users, you can use boot.img /dhd.ko or directly update.zip (the best method in my humble opinion) from alvaroxer. For the first,follow the guide,for the second just copy the zip file on sdcard, then go into recovery and flash it like a rom. It has 748 mhz as max freq. Please test it expecially on 1.3 and tell us if it is stable all the day (no reboots).
##UPDATE 10 December 2010 ## Esme518 noticed that his boot loop problem, using alvaroxer kernel, was caused by using "set on boot" setCPU feature. In fact, we suppose that with set on boot feature, setCPU change the governor of kernel on boot, giving boot loop problems, while alvaroxer kernel config already use conservative governor on boot. So, if using alvaroxer kernel, before flashing go into setCPU and disable set on boot. Give it a try!

Originally Posted by Alvaroxer

Here's an update.zip Flash it with your recovery. It's build
with j_r0dd config, so it should be compatible. I tested it with v1.3.
Let me know.

update.zip

Third modded kernel is for 2.1 official moto firmware, from Beach Head!It's a boot.img + dhd.ko, so you can install it using the following guide.

Originally Posted by Beach_Head

Okay, I finally have a working compile: 2.6.29.6 Kernel + OC up to 748Mhz

Download here: Patched Kernel with OC Mod

Note: The files in this zip are only for use on phones using the official Moto 2.1 firmware.

Also, I suggest you install SetCPU before you apply the mod. Make sure you have the default speed of 528 max and 122 min set on boot.

Well,
after spending something like 40 hours in trying/understanding/compiling android I now have a overclocked backflip

Here I upload ocboot.img (kernel image to be flashed) and dhd.ko (wifi driver).
BE AWARE
I JUST TESTED IT FOR SOME FEW HOURS.THIS IS A VERY BETA VERSION, ONLY FOR TESTING FOR EXPERIENCED PEOPLE
IN THEORY OVERCLOCKING COULD BURN CPU
try this modded kernel only for testing!Don't complain if something will not work, just report it.
BEFORE APPLY THAT KERNEL, DO A NANDROID BACKUP

Well, let explain what to do:

dhd.ko

boot.img

Originally Posted by Alvaroxer

If anyone it's having problems with the sdcard, please try this boot.img and let me know if it works.

First, copy that two files boot.img and dhd.ko in your adb directory, like c:\android-sdk-windows\tools
open console and do:

adb remount
adb push boot.img /sdcard/
adb push dhd.ko /system/lib/
adb shell

Now inside adb shell run:

cat /proc/mtd

You should see that:

dev: size erasesize name
mtd0: 00300000 00020000 "boot"
mtd1: 08ac0000 00020000 "system"
mtd2: 0df80000 00020000 "userdata"
mtd3: 00040000 00020000 "misc"
mtd4: 00500000 00020000 "recovery"
mtd5: 06000000 00020000 "cache"
mtd6: 00080000 00020000 "splash"

Be sure that "boot" is mtd0 !!It is mtd0 in mine backflip, I suppose it's the same on all backflip, however check first

Found that "boot" is mtd0, run that commands:

cat /dev/zero > /dev/mtd/mtd0
write: No space left on device [this is ok, you can ignore]
flash_image boot /sdcard/boot.img

Reboot you phone and check if all works!SetCPU reports that 528 mhz max freq is replaced with 748 mhz

Try to do a benchmark before and after kernel patch, to check for improvements.

I really have to add big thanks to bestialbub, for all help he has given me

Lots of thanks to Alvaroxer and Beach Head for their work!

**Pzyduck** · 12-02-2010, 02:22 PM

awasome

**archangeldaz** · 12-02-2010, 03:30 PM

seems to have work..set cpu says 600..had to figure out how to get my sd card remounted, even though it said it was still mounted otherwise..now just trying to fix permissions to see if i can get a few apps working that were force closing

**Alvaroxer** · 12-02-2010, 03:51 PM

Is there some charitable soul that could make this a flashable zip? Just in case that it's stable and goes productive.

**ACCUSED** · 12-02-2010, 06:05 PM

Very cool, thanks !!!

**Dbagjones** · 12-02-2010, 06:12 PM

Originally Posted by archangeldaz

seems to have work..set cpu says 600..had to figure out how to get my sd card remounted, even though it said it was still mounted otherwise..now just trying to fix permissions to see if i can get a few apps working that were force closing

What did you do to fix the sdcard showing as not mounted? I ran into the same trouble - wouldn't enable swap or apps2sd though I could see the card no problem in a file explorer.

**archangeldaz** · 12-02-2010, 06:16 PM

Originally Posted by Dbagjones

What did you do to fix the sdcard showing as not mounted? I ran into the same trouble - wouldn't enable swap or apps2sd though I could see the card no problem in a file explorer.

i believe i mounted mounted it as usb drive to my computer and then ran apps2sd again..but i then noticed that i no longer had multitouch so i reverted back to before the patch

**Skyfallkavu** · 12-02-2010, 07:00 PM

Nandroid then flashing, thanks ! 600 was all I was hoping for !

**arjunr3883** · 12-02-2010, 07:19 PM

no multitouch? so this is incompatible with Preclair 1.2?

**Skyfallkavu** · 12-02-2010, 07:27 PM

about 2.4MFLOPS before flashing, and about 1.5 after. It dosnt seem right, the phone feels faster but linpack is reporting slower speeds. Maybe it just isnt reliable, ill test after my phone has been on for 24+ hours

Originally Posted by arjunr3883

no multitouch? so this is incompatible with Preclair 1.2?

Yeah, theres no multitouch anymore

Also im now getting roughly 2.2MFLOPS, ill check throughout the day

**engharat** · 12-02-2010, 07:31 PM

At the moment some stuff are missing because in fact this is NOT a kernel patching, but it's a kernel substituting with the general 2.1 moto kernel

In the next days i'll try to operate directly on j_rodd kernel; if I can find a simply kernel patch, all new backflip features will stay.
I don't understand if the CPU is working SLOWER, or if the kernel substitution don't work so well without flashing entire rom.Or if the CPU is simply slightly faster..further researches are required.

**Skyfallkavu** · 12-02-2010, 07:42 PM

2.2 MFLOPS again, I just want to mention that 3G is not turning off when Wifi is on.

**arjunr3883** · 12-02-2010, 11:33 PM

does the phone seem faster even at 2.2 MFLOPS?

**Beach_Head** · 12-03-2010, 01:17 AM

Hi! Great job with this.

Are you using Alvaroxer's code?

I may be wrong but if I've been reading and comparing code correctly, it seems that there could be a problem with what he posted.

If you google the msm source, you will find that this comment is always there:

Code:

/* MSM7201A Levels 3-6 all correspond to 1.2V, level 7 corresponds to 1.325V. */

If you check these:

htc-msm-2.6.27

android-msm-2.6.34

and compare it with the 7x01 code he posted, you will see that when you hit level 7, the max voltage is 132000 and never goes further than that.

What Alvaroxer has done is replace the 7x01's default 528000 frequency with the 7x27's 600000 frequency and it's 200000 voltage. Which means that you could be burning the processor by using that specification.

Can you replace this line from his code:

Code:

{ 1, 600000, ACPU_PLL_2, 2, 1, 200000, 2, 7, 122880 **,

with this:

Code:

{ 1, 528000, ACPU_PLL_2, 2, 1, 132000, 3, 7, 122880 **,
{ 1, 600000, ACPU_PLL_2, 2, 1, 132000, 3, 7, 160000 **,

it should work better and still allow you to go back to 528Mhz.

Let me know...

Thanks!

Originally Posted by engharat

Well,
after spending something like 40 hours in trying/understanding/compiling android I now have a 600 mhz backflip

Here I upload ocboot.img (kernel image to be flashed) and dhd.ko (wifi driver).
BE AWARE
I JUST TESTED IT FOR SOME FEW HOURS.THIS IS A VERY BETA VERSION, ONLY FOR TESTING FOR EXPERIENCED PEOPLE
I have just compiled the modified kernel, taken from 1.2.1 j_rodd rom, and the wifi driver; I miss some "copyleft components" builds so I don't know what works and what don't works. I have tried it only on 1.2.1 j_rodd rom, I could only SUPPOSE it could work with other roms too.
IN THEORY OVERCLOCKING COULD BURN CPU
try this modded kernel only for testing!Don't complain if something will not work, just report it. In the next days I'll try to build all motorola code.
BEFORE APPLY THAT KERNEL, DO A NANDROID BACKUP

Well, let explain what to do:

dhd.ko

ocboot.img

First, copy that two files ocboot.img and dhd.ko in your adb directory, like c:android-sdk-windowstools
open console and do:

adb remount
adb push ocboot.img /sdcard/
adb push dhd.ko /system/lib/
adb shell

Now inside adb shell run:

cat /proc/mtd

You should see that:

dev: size erasesize name
mtd0: 00300000 00020000 "boot"
mtd1: 08ac0000 00020000 "system"
mtd2: 0df80000 00020000 "userdata"
mtd3: 00040000 00020000 "misc"
mtd4: 00500000 00020000 "recovery"
mtd5: 06000000 00020000 "cache"
mtd6: 00080000 00020000 "splash"

Be sure that "boot" is mtd0 !!It is mtd0 in mine backflip, I suppose it's the same on all backflip, however check first

Found that "boot" is mtd0, run that commands:

cat /dev/zero > /dev/mtd/mtd0
write: No space left on device [this is ok, you can ignore]
flash_image boot /sdcard/ocboot.img

Reboot you phone and check if all works!SetCPU reports that 528 mhz max freq is replaced with 600 mhz

Try to do a benchmark before and after kernel patch, to check for improvements.

I really have to add big thanks to bestialbub, for all help he has given me

**engharat** · 12-03-2010, 02:22 AM

Yes i' m using that code but I don't think it is reaching 2.0v . Yesterday i set setCPU in running 600 max 600 min to test speed, at 2.0 i really should feel some smoke in the air

and the phone is not getting hotter than 528 mhz. I think the vultage regulator cannot reach 2.0v..BUT it will be investigated.
I'm starting to think that the cpu doesn't reach really 600mhz...if we read cpu info in setCPU, we read bogoMips=527...mmmh!

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