A limited number of GMSL serializers can support simultaneous GMSL1 + GMSL2 operation in situations where two links are active. Not all GMSL1 backward compatible GMSL2 serializers have this capability.
Simultaneous GMSL1 + GMSL2 operation with two active links is supported by the GMSL1/GMSL2 eDP serializer (MAX96781) and advanced DSI serializer families (MAX96789).
GMSL1 backward compatible two link serializers that DO NOT support simultaneous GMSL + GMSL2 operation include the advanced HDMI serializer (MAX96763, MAX96759) and standard DSI serializer (MAX96755) families.