[U-Boot] [PATCH] vexpress64: Juno: Change PCI buss addresses for IO to start from zero.

[Tom Rini <trini@konsulko.com>]

On Tue, Nov 22, 2016 at 12:08:49PM +0000, Liviu Dudau wrote:
> On Tue, Nov 22, 2016 at 11:29:20AM +0000, Sudeep Holla wrote:
> > Hi Liviu,
> > 
> > On Tue, Nov 22, 2016 at 11:19 AM, Liviu Dudau <Liviu.Dudau@foss.arm.com> wrote:
> > > Juno uses a 1:1 mapping between CPU and PCI addresses for IO. First,
> > > that will trip devices that cannot use more than 16 bits of addresses
> > > for IO, second it is un-necessary as the system can handle zero-based
> > > PCI addresses just fine.
> > >
> > > Change the mapping to start IO bus addresses from zero.
> > >
> > 
> > I assume this require corresponding DT change, shout if that's not true.
> > If that's true, then does this patch not require patching of DT so
> > that systems not
> > running Uboot with this patch continue to work and we retain the
> > mainline DT as is ?
> 
> Yes, it does require DT changes, Jeremy Linton has a patch 

So to be clear, what level of coordination do we need between the two
parts being merged?  It would not be ideal to have combinations of
U-Boot and Linux not work.  Thanks!

-- 
Tom
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