SATA_PHY_POW_DWN_CTRL1
writel_relaxed(0x3E, base + SATA_PHY_POW_DWN_CTRL1);
writel_relaxed(0x00, base + SATA_PHY_POW_DWN_CTRL1);
writel_relaxed(0xFE, base + SATA_PHY_POW_DWN_CTRL1);
writel_relaxed(0x3E, base + SATA_PHY_POW_DWN_CTRL1);