imx6_ahci_phy_ctrl
error = imx6_ahci_phy_ctrl(sc, SATA_P0PHYCR_CR_CAP_ADDR, true);
error = imx6_ahci_phy_ctrl(sc, SATA_P0PHYCR_CR_CAP_ADDR, false);
error = imx6_ahci_phy_ctrl(sc, SATA_P0PHYCR_CR_CAP_DATA, true);
if (imx6_ahci_phy_ctrl(sc, SATA_P0PHYCR_CR_CAP_DATA, false) != 0) {
error = imx6_ahci_phy_ctrl(sc, SATA_P0PHYCR_CR_WRITE, true);
error = imx6_ahci_phy_ctrl(sc, SATA_P0PHYCR_CR_WRITE, false);
error = imx6_ahci_phy_ctrl(sc, SATA_P0PHYCR_CR_READ, true);
error = imx6_ahci_phy_ctrl(sc, SATA_P0PHYCR_CR_READ, false);