XGMAC_LPI_CTRL
u32 lpi = readl(ioaddr + XGMAC_LPI_CTRL);
value = readl(ioaddr + XGMAC_LPI_CTRL);
writel(value, ioaddr + XGMAC_LPI_CTRL);
value = readl(ioaddr + XGMAC_LPI_CTRL);
writel(value, ioaddr + XGMAC_LPI_CTRL);