Arria V PCIe hard IP

For Arria V device, the mapping of nPERST is as below:

- nPERSTL0 --> bottom Hard IP of pin_perst

- nPERSTL1 --> top Hard IP of pin_perst

In your case, try workaround it by changing to use Soft Reset Controller.

Using Soft Reset Controller doesn't required the connection to pin nPERSTL0. Tie pin_perst to 1 at top level file and nPERSTL0 can be left unconnected at pin assignment.

Steps to switch to soft reset controller in Qsys:

1) Edit the .qsys file

2) Search for the string 'force_src'

3) Set parameter force_src to 1:

<parameter name="force_hrc" value=0" />

<parameter name="force_src" value=1" />

4) Save the changes to the .qsys file and regenerate the Qsys system.

5) Use npor input to reset the core and application logic.