Dick Arentz lists the following times for FP4+ in D-76 1+0 to develop negatives for platinum in his book on platinum printing:

Normal development, subject brightness range of 7, effective film speed of 125, 8 minutes for a density range of 1.4, 12.5 minutes for a density range of 1.6 and 15 minutes for a density range of 1.8, tray development. For a SBR of 6, normal development, the times change to 13, 16, and 20 minutes, film speed of 125.

Source: Dick Arentz, "Platinum & Palladium Printing" (2nd Edition).