ID:15839 inclk port of Clock Buffer Block "<name>" is driven by an illegal source, but must be driven by a PLL clock output because CLOCK_TYPE parameter is set EXTERNAL_CLOCK_OUTPUT

CAUSE: The inclk port of the specified Clock Control Blocks is driven by the specified source. When the CLOCK_TYPE parameter is set to EXTERNAL_CLOCK_OUTPUT, the inclk port must be driven by a PLL clock output.

ACTION: Modify the design so that the inclk port of the specified Clock Control Block is driven by a PLL clock output.