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Date: Tue, 18 Dec 2007 17:59:20 -0600
From: Scott Wood <scottwood@freescale.com>
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To: rmcguire@videopresence.com
Subject: Re: DTS files,  83xx, clock frequencies
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Russell McGuire wrote:
> I note that in most of the 83xx dts config files that the different
> frequency fields are being populated with non-zero numbers. i.e. bus-freq,
> clock-freq, core-freq, etc...
> 
> Isn't default behavior that these fields are kept from the <BIOS> U-boot
> during boot, if a zero is present?

U-boot overwrites those values regardless of whether they were zero in 
the dts.

> Is there any advantage to resetting them
> within the dts file during linux boot up?

No, and it doesn't.  If you're looking arch/powerpc/boot, then that's 
for compatibility with non-device-tree-aware u-boots.

-Scott