I still find ED's observation that voltage changes almost have no effect really strange, as if VDD-MPU was connected to wrong OMAP balls. Can it really do 1GHz at just 0.75V like ED says? With NEON too? Does 1.06V vs 1.25V setting have any difference for the high frequencies? Perhaps there is some clue here too...
Gražvydas
On Thu, Nov 24, 2016 at 12:03 AM, Michael Mrozek EvilDragon@openpandora.org wrote:
Am Wed, 23 Nov 2016 21:03:51 +0100 hat "H. Nikolaus Schaller" hns@goldelico.com geschrieben:
Hi,
This may become a general problem: we might get it up to 1.7GHz peak clock rate by fixing the freeze issue, but thermal throttling might reduce the average clock rate to let's say 1.2GHz. Then it is the same as running them permanently at 1.2GHz.
Maybe, is this the reason why TI dropped the 1.7GHz specification because nobody can use it 100% of the time without overheating the chip even with active cooling?
Linux-Swat is running his devboards (with a better passive cooling than the original) at 1,7GHz without overheating.
So the "freeze-barrier" is somewhere between 1.0 and 1.1 GHz.
For the CPU only and NEON, yes. Don't forget that using the 3D GPU will need more power, so it might freeze with 1GHz already as well.
-- Mit freundlichen Grüßen,
Michael Mrozek
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