As discussed in the A Word About . . . Green Chemistry: L-DOPA, the (R,R) DiPAMP phosphine

Question:

As discussed in the "A Word About . . . Green Chemistry: L-DOPA", the (R,R) DiPAMP phosphine ligand was used to prepare the precursor to L-DOPA. What is the absolute configuration, R or S, of the stereogenic carbon in L-DOPA? What do you expect to be the product of the analogous hydrogenation reaction if (S,S)-DiPAMP was used as the phosphine ligand?