On Mon, Dec 01, 2014 at 12:35:18PM +0100, Hidde Verstoep wrote:
> > By the way.. When compiling kernel for Xenomai, I am advised to
> > turn off CPU Frequency scaling "as it is known to cause
> > trouble". When enabled I could inspect and set the CPU clock
> > frequency by the "cpufreq-info" and "cpufreq-set". These tools
> > are no longer available and I don't find any settings in the
> > menuconfig.
> >
> > What is the default BBB CPU frequency when frequency scaling is turned off?
>
> From my experience with the BBB and Xenomai:
> The default CPU frequency with frequency scaling turned off is 600
> MHz. This was not acceptable for me since the BBB supports 1000
> Mhz.
Well, to what frequency does u-boot set the processor? Because if
u-boot sets the frequency to 600 MHz and Linux does not change it,
chances are that if you set the frequency to 1 GHz in u-boot, Linux
will not change it either. This is what I do on the omap3 board I
use: set the frequency to 720 MHz in u-boot.
--
Gilles.
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