In the HDMI 1.4/2.0 Receiver Subsystem 3.1 (Rev 1), when the Video mode is HDR, the link is not stable, and restarts every few seconds.
What can cause the problem?
This is a known issue in HDMI 1.4/2.0 Example design.
It occurs on an Apple TV 4K with 4K HDR mode when HDCP is disabled.
The default EDID file in the example design does not support HDR.
You can work around the problem by using the steps below to clone the EDID of the Sink: