MAXIM

In GMSL2, the [[forward link]] transmits data from the serializer (e.g., a camera) to the deserializer (e.g., a display or processor), while the [[[reverse link]]] transmits data in the opposite direction, from the deserializer to the serializer.

https://www.analog.com/media/en/technical-documentation/user-guides/gmsl2-general-user-guide.pdf