  We study the $\lambda$--deformation of symmetric coset models from the
viewpoint of a four dimensional Chern-Simons theory \cite{CY3}. In addition, by
applying the "dual" boundary conditions of the ones used in the construction
$\eta$--deformed PCM in the trigonometric description \cite{TRIGYB} we
construct a $\lambda$--deformation type model.
