Re: [PATCH] PCI: Add no-D3 quirk for Mellanox ConnectX-[45]

On Wed, 2019-01-09 at 17:32 +1100, Alexey Kardashevskiy wrote:

I have just moved the "Mellanox Technologies MT27700 Family
[ConnectX-4]" from garrison to firestone machine and there it does not
produce an EEH, with the same kernel and skiboot (both upstream + my
debug). Hm. I cannot really blame the card but I cannot see what could
cause the difference in skiboot either. I even tried disabling NPU so
garrison would look like firestone, still EEH'ing.

The systems have a different chip though, firestone is P8 and garrison
is P8', which a slightly different PHB revision. Worth checking if we
have anything significantly different in our inits and poke at the HW
guys.

BTW. Are the cards behind a switch in either case ?

Cheers,
Ben.