BGX_SMUX_CBFC_CTL
cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_CBFC_CTL);
cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_CBFC_CTL);
bgx_reg_write(bgx, lmacid, BGX_SMUX_CBFC_CTL, cfg);
bgx_reg_write(bgx, lmacid, BGX_SMUX_CBFC_CTL, ((0xffffULL << 32) |