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

Sudeep Holla sudeep.holla at arm.com
Tue Nov 22 12:29:20 CET 2016


Hi Liviu,

On Tue, Nov 22, 2016 at 11:19 AM, Liviu Dudau <Liviu.Dudau at 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 ?

--
Regards,
Sudeep


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