Fast PCI Express endpoint enumeration
using tandem configuration is not supported. This use case addresses the ability to initially
load a fully configurable PCI Express protocol solution
from a small external ROM, so as to meet the 100 ms enumeration requirement. Support for
tandem configuration for the PL PCIe block in AMD
Versal adaptive SoC is not currently planned.
Note: Any user design requiring fast PCIe enumeration or configuration through PCIe should use the PCIe
controllers in the CPM. Not all AMD
Versal adaptive SoCs contain this particular resource.
For details, see
Versal Adaptive SoC CPM Mode for PCI Express Product
Guide (PG346).