  We present preliminary results from a global study of the extended scalar
singlet model with a fermionic dark matter (DM) candidate. In addition to
requiring a successful electroweak baryogenesis, we combine constraints from
the DM relic density, direct detection limits from PandaX-II experiment,
electroweak precision observables and Higgs searches at colliders. In agreement
with previous studies, we find that the model can simultaneously explain (at
least a part of) the observed DM abundance and matter-antimatter asymmetry. The
viable points often lead to strong gravitational wave (GW) signals that can
potentially be probed at future GW experiments.
