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Subject: Re: [PATCH 18/19] bootwrapper: Add xlate_reg(), and use it to find
	serial registers.
From: Josh Boyer <jwboyer@linux.vnet.ibm.com>
To: Scott Wood <scottwood@freescale.com>
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Date: Mon, 12 Feb 2007 15:10:15 -0600
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On Mon, 2007-02-12 at 10:45 -0600, Scott Wood wrote:
> Mark A. Greer wrote:
> > On Wed, Feb 07, 2007 at 05:01:45PM -0600, Scott Wood wrote:
> > 
> >>xlate_reg() uses the ranges properties of a node's parentage to find the
> >>absolute physical address of the node's registers.
> >>
> >>The ns16550 driver uses this when no virtual-reg property is found.
> > 
> > 
> > Is this necessary?  Shouldn't there always be a virtual-reg?
> 
> None of the dts files in the kernel tree currently have such a property...

4xx will use this.  The bootwrapper will use the UART mapping setup by
the firmware to print out to the console.  At least that is why it was
added to being with, and how I had it working on Ebony a while ago.
David may have changed it since.

josh