S4882 support

[Stefan Reinauer]

* Eric W. Biederman <ebiederman at lnxi.com> [040324 08:42]:
> Correct.  The early hypertransport initialization code is not
> complete in the 4P case.  That incompleteness triggers the later
> fixups.
 
I assume you talk about the setup of the coherent devices.

> I could not test that case, and there were at least some small
> difficulties in that it was not obvious how the 4P case should
> be extended to work properly.

Can you go a bit into detail, please?
 
> Why you are getting stuck in amdk8_scan_chains I do not currently
> understand yet.  I suspect Stefan's suggestion of a delayed reset
> is the appropriate course to implement.

Do you have an example situation that would cause the need for a 
late reset? It would sound clean to only touch this part of the system
once and at one place. If this is possible, we safe looking at 50% of
the involved code in case something goes wrong..

Stefan
  
-- 
  Stefan Reinauer, SUSE LINUX AG
Head of Architecture Development