--- /dev/null
+--- a/drivers/ata/ahci_platform.c
++++ b/drivers/ata/ahci_platform.c
+@@ -29,12 +29,23 @@ static const struct ata_port_info ahci_p
+ .port_ops = &ahci_platform_ops,
+ };
+
++static const struct ata_port_info cns3xxx_port_info = {
++ .flags = AHCI_FLAG_COMMON,
++ .pio_mask = ATA_PIO4,
++ .udma_mask = ATA_UDMA6,
++ .port_ops = &ahci_pmp_retry_srst_ops,
++};
++
+ static int ahci_probe(struct platform_device *pdev)
+ {
+ struct device *dev = &pdev->dev;
+ struct ahci_host_priv *hpriv;
++ const struct ata_port_info *info = &ahci_port_info;
+ int rc;
+
++ if (IS_ENABLED(CONFIG_ARCH_CNS3XXX))
++ info = &cns3xxx_port_info;
++
+ hpriv = ahci_platform_get_resources(pdev);
+ if (IS_ERR(hpriv))
+ return PTR_ERR(hpriv);