EMAC_MAC_CTL0_REG
reg_val = readl(db->membase + EMAC_MAC_CTL0_REG);
db->membase + EMAC_MAC_CTL0_REG);
reg_val = readl(db->membase + EMAC_MAC_CTL0_REG);
writel(reg_val, db->membase + EMAC_MAC_CTL0_REG);