MDIO_SERDES_DIGITAL_A_1000X_CONTROL2_PRL_DT_EN
control2 |= MDIO_SERDES_DIGITAL_A_1000X_CONTROL2_PRL_DT_EN;
control2 &= ~MDIO_SERDES_DIGITAL_A_1000X_CONTROL2_PRL_DT_EN;