GMAC_MAC_MDIO_ADDRESS_GB
GMAC_MAC_MDIO_ADDRESS_GOC_READ | GMAC_MAC_MDIO_ADDRESS_GB;
if ((addr & GMAC_MAC_MDIO_ADDRESS_GB) == 0) {
GMAC_MAC_MDIO_ADDRESS_GOC_WRITE | GMAC_MAC_MDIO_ADDRESS_GB;
if ((addr & GMAC_MAC_MDIO_ADDRESS_GB) == 0) {