T_SATA0_AHCI_HBA_CAP_BKDR
val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_AHCI_HBA_CAP_BKDR);
writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_AHCI_HBA_CAP_BKDR);