cpufreq (was: My Gta02s wont charge / chgena = 0 by default)

Michael 'Mickey' Lauer mickey at openmoko.org
Tue Jun 24 15:05:50 CEST 2008


Am Dienstag 24 Juni 2008 14:53:56 schrieb Werner Almesberger:
> Andy Green wrote:
> > We could crank up the clock later I suppose, keeping the backlight, LCM
> > and Glamo all down if they're up at this time.  The Glamo has 80MHz PLL
> > and its own DRAM so I don't think it's that cheap to run.
>
> Just leaving the CPU at 200MHz (instead of cranking it up to 400MHz in
> board_init) saves 30mA, turning off the LDOs another 40mA. Almost there,
> without even trying hard :-)

Cool. This brings me back to asking why we did abandon or ignore cesars work 
towards cpufreq. Andy you said something about UARTS being endangered during 
clock switch?

:M:




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