ID:12145 DQS input reference clock of DQS I/O pin "<name>" must be an input clock pin

CAUSE: You assigned the DQS Phase Shift , DQS Frequency , and DQS Input Reference Clock logic option to the specified DQS I/O pin. However, the DQS input reference clock of the specified DQS I/O pin is not an input clock pin. The DQS input reference clock must be an input clock pin. For projects created prior to 2.1 SP1, you must add DQS Input Reference Clock assignments to each DQS pin. Its value must be the name of the input clock signal (design pin name), which should be considered the system clock for the DQ/DQS interface.

ACTION: Change the DQS Input Reference Clock logic option assignment to use an input clock pin.