Warning: set_interface_assignment: Interface "hps_io" does not exist

I managed to get rid of the hps_io does not exist message, by adding the uart0 pins to HPS I/O Set 1. This also make the preloader continue executing, instead of hanging in the uart initialization.

Also noticed that I need to use the same name at the top level as the name used in the hps exported conduit, or there will be no pins assigned (without error).

But in the pin planner I can see a potential problem.

The differential pins are not assigned as a pair. e.g. mem_ck is paired with mem_ck(n) instead of mem_ck_n.

Is this something to worry about? At least they are assigned to the correct pins.