SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
Whenever link goes from connected to disconnected state, the PCIe subsystem requires re-initialization based on the events occurring in PCIe core. A request for reset is typically going to be issued and will manifest as a reset request interrupt. Since loopback requires transitions through link connect and disconnect, it will generate reset request interrupts. Typically, issuing the warm reset (module reset for CBA) would be sufficient.