Arm Cortex A8 600Mhz+

[Pickle]

I thought that the OMAP is smart enough to have clever clocking. Especialy underclocking. Nobody wants to clock every of its million apps per hand today. :lol: So I suggest to put at least in some apps a (auto)clocking Option. This way, we could save battery Power I guess if we set an maximum clocking of course. It never was fun to ckock the programs onto the GP2X per hand even with Gmenu. So I hope this manual setting is history, except for people who like to do this per hand.

I think there needs to be software in the kernel to handle power management, someone was working on it but basically couldnt put a of of time into it.
The pxml supports a clock setting to run the app at.

 

[philly]

If you overvolt it you void the warranty, the default OS does not allow overvolting.

I think Ed has been overseeing an overclock app which might ship with the OS.

That sounds perfect Craig... OP have taken the gamble out of overclocking, it`ll stop people being stupid and stop all the arguing about warranty and top speeds but people can still have a choice and be in control...

Anyone who wants to risk it all by modding knows what they are getting into and can ask for no warranty when it goes tits up!

 

[paddy]

Well i for one am really happy with all the answers and info on this and for once some real devs and Craig giving out the answers ,i now know why 600mhz is stated and why 500mhz will be the default and from what i read 800mhz would be the max clock speed for the pandora which is absolutly fantastic ! anything over 800mhz should be classed as overvolt and not within recommended spec by OPT and we will also get an overclocking tool to boot ,bloody great and at 800mhz things will be soo much better.


Thankyou Craig and pickle for your time in answering my questions guys.

Paddy

 

[SirisC]

Well i for one am really happy with all the answers and info on this and for once some real devs and Craig giving out the answers ,i now know why 600mhz is stated and why 500mhz will be the default and from what i read 800mhz would be the max clock speed for the pandora which is absolutly fantastic ! anything over 800mhz should be classed as overvolt and not within recommended spec by OPT and we will also get an overclocking tool to boot ,bloody great and at 800mhz things will be soo much better.


Thankyou Craig and pickle for your time in answering my questions guys.

Paddy

No, over 800MHz should not be classed as overvolt unless you increase the voltage to obtain that frequency. (Chances of reaching such frequencies without overvolting are probably pretty slim.)[edit]It looks like the 1GHz N900 was done without overvolting, just wasn't stable higher than 900MHz[/edit]

 

[Exophase]

So what about 600MHz with the "over"volted OPP5, which is the only mode where TI allows its operation? I sure hope all Pandora's work okay at OPP3 and 600MHz because it's going to be overclocking.

 

[paddy]

What i mean is ,creating settings and 800mhz being the topline anything over that overvolt or not should not be within the warranty ,this would keep safer levels for OP to deal with if 800mhz is really safe then go for it,if a board is returned with overheating issues it would make it easyer to see that it has infact been overclocked mabe even overvolted ,it keeps OP right and the customer happy with 800mhz,besides 850+ is unstable so there should not be a setting for it.

I do understand that without overvolting you could goto 900+ possibly but with keeping the realms/limits at 800 via OPt settings it would kind of insure boards are not returned from overheating or meltdown ,if they do see this anywhere in the one year period i would suspect it has been manualy overclocked past the OP settings and possibly
overvolted.

I am just thinking of both OP and the customer.

 

[1magus]

I will overclock for compatibility issues with:
N64
Sega 32x
Sega Saturn
Dos Box

Other than those there is no reason to

 

[juniorm33]

I will overclock for compatibility issues with:
N64
Sega 32x
Sega Saturn
Dos Box

Other than those there is no reason to

Sounds like you've got reason enough :lol:

@paddy - Craig actually said 900 not 800Mhz. And he only mentioned overvolting voiding warranty.
Anyway this has been discussed a few times, so I stick by wait and see even if we have had input I hadn't expected. (since this has already been discussed and ended badly)

 

[Elanzer]

Based on how the overclocking with the Cortex A8 SoCs in the Nokia N900s have went, the overclock ceiling of the SoC in the Pandora is about 1200mhz, given overvolting.

My N900 does 1.1ghz with the stock voltage the kernel does for 600mhz, and 1000mhz below stock voltage. They use virtually the same SoC as the Pandora does (different model number only by sales channel).

Vast majority of people will likely get about 900mhz without adding voltage.

 

[Aninhumer]

What i mean is ,creating settings and 800mhz being the topline anything over that overvolt or not should not be within the warranty ,this would keep safer levels for OP to deal with if 800mhz is really safe then go for it,if a board is returned with overheating issues it would make it easyer to see that it has infact been overclocked mabe even overvolted ,it keeps OP right and the customer happy with 800mhz,besides 850+ is unstable so there should not be a setting for it.

There is no reason overclocking at standard voltage levels would cause any damage to the hardware.
All that would happen if it's clocked too high is it would crash and return to a safe speed.

Certainly OP shouldn't include an official app to clock any higher than they're sure will work, but that's just so people don't complain.

 

[Exophase]

I will overclock for compatibility issues with:
N64
Sega 32x
Sega Saturn
Dos Box

Other than those there is no reason to

Overclocking improves emulator speed, not compatibility (in all but unusual cases - JayFoxRox's PSP emulator might overcome compatibility issues w/more performance).

I don't expect Saturn emulation to go beyond a Yabause port, where overclocking will probably just bump you from extremely slow to very slow.

 

[Exophase]

Based on how the overclocking with the Cortex A8 SoCs in the Nokia N900s have went, the overclock ceiling of the SoC in the Pandora is about 1200mhz, given overvolting.

My N900 does 1.1ghz with the stock voltage the kernel does for 600mhz, and 1000mhz below stock voltage. They use virtually the same SoC as the Pandora does (different model number only by sales channel).

Vast majority of people will likely get about 900mhz without adding voltage.

That's a big assumption - we actually don't know that much about OMAP3430, and if Nokia is using binned ones. People with dev boards could only get 900MHz wat OPP5 which people on this board are considering overvolting (there's also OPP6 for the 720MHz capable variants). Given that OMAP35x only allows 600MHz at OPP5 that could be stock on the N900, but OP won't ship with the ability to run at it.

Anyway, just because your N900 goes that high doesn't mean everyone's does, and I doubt you tested it that aggressively (ie, 100% NEON utilization)

I question the sales channel thing - I figured OMAP34x had some kind of builtin baseband or better support for it or something.

 

[laurencevde]

Eehm, AFAIK, OPP5 isn't considered overvolting, and is fully supported. It's just that using it for prolonged periods of time does slightly lower the chip's life-expectancy, so, by default, the Pandora won't go to that voltage, but apps can specify that they need that speed, at which the Pandora will allow it.

 

[juniorm33]

Eehm, AFAIK, OPP5 isn't considered overvolting, and is fully supported. It's just that using it for prolonged periods of time does slightly lower the chip's life-expectancy, so, by default, the Pandora won't go to that voltage, but apps can specify that they need that speed, at which the Pandora will allow it.

Overvoltage as defined by TI and OPT may be different. Warranty may not cover OPP5, regardless of what speed you run it at.
It's also been mentioned that the OPP can't be changed in the default image. Therefore if an app requests a speed it will still be at the default OPP, it wont change it.
The only thing that can be changed in the default image is the frequency.