Description
Due to a problem in the Quartus® Prime software version 16.0 and earlier, you may see flashsm_reset reported as an unconstrained clock. This occurs when you instantiate the Parallel Flash Loader (PFL) IP in a MAX® 10 device.
Resolution
Flashsm_reset is not a clock so it is safe to ignore this warning.
This problem is scheduled to be fixed in a future release of the Quartus Prime software.