I am trying to have 2 pcs talk over PCIe but to do that I need to disable spread spectrum. I am currently running a AMD 785G chipset on one side and an Arm processor on the other... where in the register set can I disable spread sprectrum? My bios does not provide this support natively so I will need to write some startup driver that will initialize this.
the 785g = rs880 maybe a dev can confirm this
if so maybe this could help http://support.amd.com/TechDocs/46142.pdf#search=rs880
also if you go to amd.com and use the search there , it will search on all amd that way is easy to find technical documents and so on.
i hope it helps