BGX_GMP_PCS_MR_CONTROL
val = PORT_RD_8(sc, BGX_GMP_PCS_MR_CONTROL);
PORT_WR_8(sc, BGX_GMP_PCS_MR_CONTROL, val);
val = PORT_RD_8(sc, BGX_GMP_PCS_MR_CONTROL);
val = PORT_RD_8(sc, BGX_GMP_PCS_MR_CONTROL);
val = PORT_RD_8(sc, BGX_GMP_PCS_MR_CONTROL);
PORT_WR_8(sc, BGX_GMP_PCS_MR_CONTROL, val);