Description
In some scenarios, issues may arise when the PCIe HIP enters L2 low power state.
Some symptoms may include:
-LTSSM being stuck in L2 low power state
-PCIe enumeration issues after entering L2
Resolution
There are two methods that a user can use to address issues when the PCI Express HIP enters L2 low power state.
To prevent the PCI Express HIP from entering L2 low power state.
- Tie pme_to_cr to 1\'b0.
Another way to address the issue is to implement user logic that will reset the PCIe core when the LTSSM goes to L2.idle.