[PATCH v4 4/6] ata: ahci_imx: Add 32bits DMA limit for i.MX8QM AHCI SATA

[Richard Zhu]

Since i.MX8QM AHCI SATA only has 32bits DMA capability.
Add 32bits DMA limit here.

Signed-off-by: Richard Zhu <hongxing.zhu@xxxxxxx>
---
 drivers/ata/ahci_imx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/ata/ahci_imx.c b/drivers/ata/ahci_imx.c
index 4dd98368f8562..e94c0fdea2260 100644
--- a/drivers/ata/ahci_imx.c
+++ b/drivers/ata/ahci_imx.c
@@ -827,6 +827,9 @@ static const struct scsi_host_template ahci_platform_sht = {
 
 static int imx8_sata_probe(struct device *dev, struct imx_ahci_priv *imxpriv)
 {
+	if (!(dev->bus_dma_limit))
+		dev->bus_dma_limit = DMA_BIT_MASK(32);
+
 	imxpriv->sata_phy = devm_phy_get(dev, "sata-phy");
 	if (IS_ERR(imxpriv->sata_phy))
 		return dev_err_probe(dev, PTR_ERR(imxpriv->sata_phy),
-- 
2.37.1