[PATCH 07/15] ARM: dove: use fixed PCI i/o mapping

On Mon, 9 Jul 2012, Rob Herring wrote:

Why use 1M when 64K is enough based on our prior conversations? The more
we standardize the configuration, the more we can make common. I think
the majority of the pci setup functions can be consolidated. It's really
just data differences for the resource setup. I only used 1M alignment
in case there were some alignment requirements in the h/w and it can't
handle a starting pci bus address of 0x10000. I think it's just the
Marvell parts that do this, so if anyone knowledgeable on those parts
can comment it would help.

The only Marvell board I have which can accommodate a PCI card does 
support 3.3V PCI cards only.  Otherwise this is all PCI Express.  And 
the only PCI cards with I/O space I've seen are 5V PCI cards.

So I'd say: go for the option with the best consolidation outcome.  No 
one is using cards with I/O space on those platforms.


Nicolas