maemo.org - Talk - View Single Post - Overclock N800 with new OS2008?

	qwerty12	2008-08-29 , 16:46
	Posts: 4,274 \| Thanked: 5,358 times \| Joined on Sep 2007 @ Looking at y'all and sighing	#21

@Munk

Here is an diablo one that does the same thing as fanoush's kernel but in a different manner:
http://www.ageofikon.info/zImage-qwe...337-qwertyp!mp

Only thing is you have to change the speed manually, from lardman's dsp-sbc release notes:

Then you can do this to make the ARM run at 400MHz while the DSP task is running at 133MHz: "echo 0 > /sys/power/op_dsp" To go back to the default (ARM at 330MHz while DSP running at 220MHz) do this: "echo 1 > /sys/power/op_dsp"

Although, those are safe frequencies in that kernel. To specify your own frequencies, it involves changes to n800-dvfs.c in the kernel source and a kernel recompile. I really wouldn't recommend it. Come think of it, I don't know if it's even possible for the processor to run overclocked.

From Igor from the -developers posting fanoush linked to:

> Also I wonder what happens when I set DSP_CLK_KHZ in OP_0 state to
> 266000, can I damage the hardware or will the DSP just crash (leaving
> rest of the system relatively OK)?

Depending on many conditions, it might or might not work, however as
long as you don't crank up the voltage, there is no risk of damaging the
silicon.

HOWEVER (!) corruption in the DSP execution path might lead to
unpredictable results, including bricking the unit (to that point that
cold flashing is required). Overclocking the DSP only should not so
easily cause damage but it's not really a black and white situation.
Also you might have to play with the synchronizer.

Last edited by qwerty12; 2008-08-29 at 16:49.

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