SATA_ENET_SDS_RST_CTL
writel(0xdf, csr_serdes + SATA_ENET_SDS_RST_CTL);
readl(csr_serdes + SATA_ENET_SDS_RST_CTL); /* Force a barrier */
writel(0x0, sds_base + SATA_ENET_SDS_RST_CTL);
val = readl(sds_base + SATA_ENET_SDS_RST_CTL); /* Force a barrier */
writel(0x20, sds_base + SATA_ENET_SDS_RST_CTL);
readl(sds_base + SATA_ENET_SDS_RST_CTL); /* Force a barrier */
writel(0xde, sds_base + SATA_ENET_SDS_RST_CTL);
readl(sds_base + SATA_ENET_SDS_RST_CTL); /* Force a barrier */