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.du...@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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