Question: Can both RX and TX be used on the same GT quad for DisplayPort?
Answer: Yes. The Video PHY Controller supports the capability of performing both RX and TX on the GT quads. However, they cannot be different protocols.
Question: Does the Video PHY Controller support different protocols for RX and TX?
Answer: No. The Video PHY Controller must use the same protocol if both RX and TX are used.
Question: I am facing issues with link training. What are some things that can be done to improve link training?
Question: Does the AMD subsystem support my resolution and frame rate?
Answer: DisplayPort operates at any resolution and frame rate as long as the DisplayPort link is not oversubscribed, and as long as HACTIVE is divisible by 4 or 8 depending on the value you select for the Pixels Per Clock (PPC) option in the Customize IP dialog box (see Figure 1). Use the following equation to determine if the custom resolution can be supported:
- For 8b10b link rates
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(HTotal × VTotal × bits_per_component × frame rate) < (0.8 × link_rate × num_lanes)
- For 128b132b link rates
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(HTotal × VTotal × bits_per_component × frame rate) < (0.96 × link_rate × num_lanes)