Category: IP (DisplayPort)
Tools: Quartus® Prime
device:-


Depending on the setting, the accessible range to the registers inside the DisplayPort IP described in the DPCD Locations of the following user guide will change.
Therefore, check in which mode the function you plan to use can be used and select the mode.

(reference)
DisplayPort Intel® FPGA IP User Guide
https://www.altera.com/content/dam/altera-www/global/en_US/pdfs/literature/ug/ug_displayport.pdf
(See the DPCD Locations list in the Sink-Supported DPCD Locations section)

For example, SST (Single Stream) uses Non-GPU and MST (Multi Stream) uses GPU.