Successful overclock

**Xmister** · 08-24-2010, 02:58 AM

I think it's a good idea now, to add a little summary to the first post for the users who are willing to try it, so here it is:

User part:

It's NOT recommended for anyone to try these kernels, because they can cause serious damage to your hardware!
If you are however try it, then it will be your own responsibility, and we can't help you if you brick your phone!
First try it with the lowest voltage available(1250)!

Known issues:

The vibrating of the phone will be lower.
The Android UI will be laggy.
Depending on the voltage, and on your phone, you may have freezes and/or reboots.
The clock (time) will be late 2-3 minutes per hour.

If you accept these things, you can download LeshaK's OC kernels from HERE

If you want to go back to stock clocks, flash the attached file as PDA in Odin.
Don't select anything else, just this PDA and the ops file!
This will replace the kernel to LK 2.09.1 (MT).

Developer part:

Thanks the sources to guybrusht!

Here you will find them

Now for making the OC more stable and faster at 1066, we would have to sync the 3 CPU clock.
I think that could be done by editing the PDIV and HCLKX2_DIV values here:

Code:

/* ARMCLK, HCLKX2, APLL, PDIV, ARM_DIV, HCLKX2_DIV */
static const u32 s3c_cpu_clk_tab_800MHz_oc[][6] = {
	{1066*MHZ,  266 *MHZ, 533, 3, 0, 3},

But to do that we should now how are the clocks are actually calculated from these values.

**nribeiro** · 08-24-2010, 03:05 AM

You know that this is great news man?! Thanks a lot for trying and keep up with the good work man! Come on people, help this guy here.

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**Flynny75** · 08-24-2010, 03:05 AM

Well this is a nice surpirse! Once you get superuser working, and figured out about those values, ill give it a try

This might help

http://www.vergenet.net/~raster/files/man-6410-apn.pdf

You can search for PDIV and it finds stuff that might be useful, but no matches for the other 2

**Jay** · 08-24-2010, 03:09 AM

another gud new...

u guyzz rock,,
I want it,, nd plzz upload d kernel we uv fixed d superuser...

**ker0ltjuh** · 08-24-2010, 03:12 AM

Can you make it work with antibytes mt kernel?

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**Xmister** · 08-24-2010, 03:21 AM

Originally Posted by ker0ltjuh

Can you make it work with antibytes mt kernel?

Sent from my GT-I5700 using Tapatalk

My kernel already has MT, and I can only patch antibyte's kernel, if he gives me his kernel's source.

---------- Post added at 02:21 AM ---------- Previous post was at 02:18 AM ----------

Originally Posted by Flynny75

You can search for PDIV and it finds stuff that might be useful, but no matches for the other 2

Yeah, thanks for the link, I'm trying to interpret it, but it's 2:20 AM here, so it will take a little time

OK, it seems, we only the middle one, that divides the actual ARM clock, but because it was 0 with 800 already, I should somehow have to generate a different ARMCLK, or the whole thing is useless.

**Sp.X** · 08-24-2010, 03:41 AM

I think its been already made through a french person who attended to make a mode called Virginsmodv0.3 (link is at About multitouch thread).
That person seems that he have achieved overclocking without any change in voltage + attended to decrease lower freqs voltage.
I couldn't grasp alot of information through Google Translation, but you might want to contact him.

**Xmister** · 08-24-2010, 04:07 AM

Originally Posted by Sp.X

I think its been already made through a french person who attended to make a mode called Virginsmodv0.3 (link is at About multitouch thread).
That person seems that he have achieved overclocking without any change in voltage + attended to decrease lower freqs voltage.
I couldn't grasp alot of information through Google Translation, but you might want to contact him.

I know, but I don't think he would just give me the patched files

Now I've got a clue about it's logic, and I know what should I do, the question is can I find a way to do it..

I've updated the first post with a little more information I've just discovered, but now I'm sleeping and thinking until tomorrow.

BTW Setting the divider to -1 is a bad idea, right?

(That would be the simplest way, and it would result 800/2^-1 which is 800/0.5 which is 1GHz)

**Flynny75** · 08-24-2010, 04:17 AM

Originally Posted by Xmister

I know, but I don't think he would just give me the patched files

BTW Now I've got a clue about it's logic, and I know what should I do, the question is can I find a way to do it..

I hope... we ALL hope! But...no pressure

No, seriously though, no pressure, we are grateful for whatever you manage to do =]

**Sp.X** · 08-24-2010, 05:56 AM

Originally Posted by Xmister

I know, but I don't think he would just give me the patched files

His modded kernel still not finished, so yup I don't think he will release the patch until he finish it.
Asking also doesn't hurt.

Originally Posted by Xmister

BTW Setting the divider to -1 is a bad idea, right? (That would be the simplest way, and it would result 800/2^-1 which is 800/0.5 which is 1GHz)

I don't think you can set a negative value. However, replacing values seems its likely to work.
btw, this reminds me of maemo.org - Talk people were trying to overclock n900's kernel. A lots of information in that thread (You might wanna check it in case you have a lots of free time)

I'd recommend waiting for the french guy to post his patch, but be free to do whatever you want.

Just before pressing post:
Warning: Do whatever YOU think is right under YOUR own responsibility and NOT mine. As what I said could be WRONG.
A friendly reminder - I needed to say that