  We address the question of whether the CP violating phase in the CKM mixing
matrix can be the only source of all CP violation. We show that in
supersymmetric models with new flavour structure beyond the Yukawa matrices,
the CKM phase can generate the required baryon asymmetry and also accounts for
all observed results in K and B systems, in particular $\epsilon'/\epsilon$ and
the CP asymmetry of $B \to \phi K_S$.
