Why does the Intel® DisplayPort IP TX port does not support video color depths of 12 or 16 bits per color(bpc)?

Due to timing closure issue, the Intel® DisplayPort IP core TX port does not support video color depths of 12 bits per color(bpc) and 16 bpc in the following FPGA devices and configurations:

1. Arria® V GX, Quad Symbol, HBR2
2. Arria V GX, Quad Symbol, HBR
3. Arria V GX, Dual Symbol, HBR
4. Arria V GX, Dual Symbol, RBR
5. Cyclone® V, Quad Symbol, HBR
6. Cyclone V, Dual Symbol, HBR
7. Cyclone V, Dual Symbol, RBR
8. Stratix® V, Quad Symbol, HBR2
9. Stratix V, Dual Symbol, HBR2
9. Stratix V, Dual Symbol, HBR
10. Arria V GZ, Quad Symbol, HBR2
11. Arria V GZ, Dual Symbol, HBR2
12. Arria V GZ, Dual Symbol, HBR
13. Intel® Arria 10, Quad Symbol, HBR2
14. Intel Arria 10, Dual Symbol, HBR2
15. Intel Arria 10, Dual Symbol, HBR

There is no workaround for this problem.

This problem is fixed in version 16.1 of the Intel Quartus® Prime software.