GPU Overclock possibility

R

rps13

Senior Member

Oct 28, 2009

113

3

• Jun 19, 2010

• #1

Right so I posted this in both the kernel thread and the overclock thread but nobody saw it so I'll just post it again:

While looking at the vogue forum, I found a thread about GPU overclocking : http://xdaforums.com/showthread.php?t=697673 the changes made to the kernel to enable this are the following: http://git.linuxtogo.org/?p=groups/...ff;h=23ff83048726252bc785699fc749a3e364a3bdb0

Unfortunately I am no programmer and I do not see how to incorporate this code in to kernel sources for MSM7xxxA processors, though it should probably work because the gpus of A and non-A processors are pretty much the same (same basic specs such as number of triangles etc.), so if a kernel dev. could try to integrate this patch, that would be awesome.

 

P

pyckvi

Senior Member

Oct 16, 2009

54

2

Sacramento, CA

• Jun 19, 2010

• #2

this really looks like some awesome stuff! i hope someone can figure this out for the g1. thanks for supporting the g1 thread!

 

P

PSP_Hacker

Senior Member

Apr 8, 2009

286

17

• Jun 19, 2010

• #3

GPU overclocking

Holy crap, a dev should take a look at that source NOW

 

A

aspecha

Member

Mar 31, 2009

24

0

• Jun 20, 2010

• #4

agreeeeed^

 

kingklick

Senior Member

Jun 23, 2009

2,432

6

• Jun 20, 2010

• #5

just saw this thread for the first time.

gona take a look

 

crypysmoker

Senior Member

Sep 24, 2009

1,071

17

Somewhere over the rainbow, 2 rights and a left

• Jun 20, 2010

• #6

Even though its a good idea in theory..
Once you start over clocking the GOS you really gona kill not only battery life, but your phone will be able to cook eggs lol

 

R

rps13

Senior Member

Oct 28, 2009

113

3

• Jun 20, 2010

• #7

Thanks kingklick, hopefully you'll figure it out so we can run newer 3D games better, as for overheating, dzo (who created this modification) says that he hasn't noticed anything differences in temperature after overclocking the GPU on the Vogue

 

G

godfatherd

Member

Nov 11, 2009

15

1

• Jun 20, 2010

• #8

It will be cool if someone can overclock the GPU , these days everybody is talking about overclocking the cpu , but what allot of people do when they are traveling is playing games, some games we cant play because they are a little bit to heavy for the GPU. Kingklick thanks for looking at this topic,
personally I have really much confidence in you!

 

Last edited: Jun 20, 2010

xaueious

Senior Member

Dec 17, 2009

980

176

Toronto

• Jun 20, 2010

• #9

For this to work.

Someone has to implement this for MSM72XX, which is completely different than what's in the TI phones.

I am not sure if that code is even in the kernel (GPU clock). I don't recall seeing it but I haven't really looked at the kernel all that much.

It's all in the board files if it's anywhere.

/arch/arm/mach-msm/

 

Ace42

Senior Member

Jul 20, 2009

11,352

2,056

USA

Moto G Power

Motorola Edge

• Jun 20, 2010

• #10

Are you sure it's safe to OC the GPU?
It's not like we're using a adreno or Power VR in these phones. Also doesn't android use the CPU for things like scrolling,animations,swiping,etc...

 

R

rps13

Senior Member

Oct 28, 2009

113

3

• Jun 20, 2010

• #11

For this to work.

Someone has to implement this for MSM72XX, which is completely different than what's in the TI phones.

I am not sure if that code is even in the kernel (GPU clock). I don't recall seeing it but I haven't really looked at the kernel all that much.

It's all in the board files if it's anywhere.

/arch/arm/mach-msm/

Click to expand...

Click to collapse

Um, the HTC Vogue (or Touch CDMA) AFAIK uses the Qualcomm MSM7500 which pretty much has the same GPU, just clocked slower than in the MSM7XXXA series, so I think it's just a case of recoding the modifications made by dzo (android kernel developer for the Vogue) for other phones.

 

Geniusdog254

Retired Recognized Developer

Jan 2, 2009

1,110

169

St. Louis

• Jun 20, 2010

• #12

The GPU code for the MSM chips is in /drivers/video/msm/gpu/kgsl/

I haven't looked at any of the code much, but kgsl.h defines some structs for what I think are clock values and in kgsl.c it contains:

Code:

/* the hw and clk enable/disable funcs must be either called from softirq or
 * with mutex held */
static void kgsl_clk_enable(void)
{
	clk_set_rate(kgsl_driver.ebi1_clk, 128000000);
	clk_enable(kgsl_driver.imem_clk);
	clk_enable(kgsl_driver.grp_clk);
}

Which to me looks a lot like its setting the GPU clock at 128Mhz.

Just my $.02

 

ivanmmj

Retired Moderator

Jan 3, 2007

5,165

54

40

• Jun 25, 2010

• #13

Geniusdog254 said:

The GPU code for the MSM chips is in /drivers/video/msm/gpu/kgsl/

I haven't looked at any of the code much, but kgsl.h defines some structs for what I think are clock values and in kgsl.c it contains:

Code:

/* the hw and clk enable/disable funcs must be either called from softirq or
 * with mutex held */
static void kgsl_clk_enable(void)
{
	clk_set_rate(kgsl_driver.ebi1_clk, 128000000);
	clk_enable(kgsl_driver.imem_clk);
	clk_enable(kgsl_driver.grp_clk);
}

Which to me looks a lot like its setting the GPU clock at 128Mhz.

Just my $.02

Click to expand...

Click to collapse

I modified this on the Eris's kernel to 160000000 and ended up with slower benchmark scores in both Neocore and Quadrant. So... possibly not that.

 

Ace42

Senior Member

Jul 20, 2009

11,352

2,056

USA

Moto G Power

Motorola Edge

• Jun 25, 2010

• #14

ivanmmj said:

I modified this on the Eris's kernel to 160000000 and ended up with slower benchmark scores in both Neocore and Quadrant. So... possibly not that.

Click to expand...

Click to collapse

Can you try others like:
352x
480x
176x
245x

 

ivanmmj

Retired Moderator

Jan 3, 2007

5,165

54

40

• Jun 25, 2010

• #15

Ace42 said:

Can you try others like:
352x
480x
176x
245x

Click to expand...

Click to collapse

384 gave me close to normal speeds but still slower than 128... 160 was slower.
It doesn't make sense.

 

mejorguille

Senior Member

Dec 14, 2009

827

45

Florida

• Jun 25, 2010

• #16

If overclocking the GPU is anything similar to the CPU, then shouldn't we be using multiples of 19.2? instead of 128, try 147.2 or 176.4 etc....

 

ivanmmj

Retired Moderator

Jan 3, 2007

5,165

54

40

• Jun 25, 2010

• #17

mejorguille said:

If overclocking the GPU is anything similar to the CPU, then shouldn't we be using multiples of 19.2? instead of 128, try 147.2 or 176.4 etc....

Click to expand...

Click to collapse

But the stock is set to 128, which is not a multiple of 19.2.

 

H

houseonfire

Senior Member

Aug 28, 2009

89

0

• Jun 25, 2010

• #18

If messing with it caused the phone to go slower, then it must be possible to mess with it to make it go faster.

 

ivanmmj

Retired Moderator

Jan 3, 2007

5,165

54

40

• Jun 25, 2010

• #19

dzo, linked me to his commit and it doesn't correspond to anything in the eris source.
http://androidhtc.git.sourceforge.n...;hpb=110e73c591db3fd23d8558659f8a6a0dfe5ba912
Time to poke around...

 

Dukenukemx

Senior Member

Jul 24, 2008

1,151

52

Jersey

• Nov 23, 2010

• #20

Owning both a Kaiser and a G1, the Kaisers 3D is actually faster. A lot of apps render quicker and smoother. Games play better too.

Would be nice if someone could pick this up, and get some over clocking action going for the GPU. Even without the overclock, my Kaisers GPU seems so much faster, but yet it's a weaker GPU then what my G1 has.