MII_GMAC4_GOC_SHIFT   32 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c #define MII_GMAC4_WRITE			(1 << MII_GMAC4_GOC_SHIFT)
MII_GMAC4_GOC_SHIFT   33 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c #define MII_GMAC4_READ			(3 << MII_GMAC4_GOC_SHIFT)