Error: Bidirectional I/O uses parallel termination, but does not have dynamic termination control connected

When you use ALTDQ_DQS2 with ALTOCT for Stratix V in Quartus® II 12.0, you may get the following fitter errors:

Error (174051): Bidirectional I/O "read_write_data_io [0]" uses parallel termination, but does not have dynamic termination control connected

To workaround it, please make the following RTL changes:

1.    Add fr_clock_in,oct_ena_in  to the top level. Make sure they are connected from altdq_dqs2_stratixv.sv to the top level.

2.    Make the width of oct_ena_in match in the IP file and top level file. Change its width if required.