AHCI_PORT_TRANS_CFG
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);