EMAC_RX_CTL1
writel(0, ioaddr + EMAC_RX_CTL1);
v = readl(ioaddr + EMAC_RX_CTL1);
writel(v, ioaddr + EMAC_RX_CTL1);
v = readl(ioaddr + EMAC_RX_CTL1);
writel(v, ioaddr + EMAC_RX_CTL1);
v = readl(ioaddr + EMAC_RX_CTL1);
writel(v, ioaddr + EMAC_RX_CTL1);