from man page examples:
List all partition profiles defined for partition lpar2:
lssyscfg -r prof -m system1 --filter "lpar_names=lpar2"
List the partition profiles prof1 and prof2 defined for the partition that has an ID of 2:
lssyscfg -r prof -m system1 --filter "lpar_ids=2, "profile_names=prof1,prof2""
You need to escape embedded quotes in the filter --string...
HTH,
p5wizard