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

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Message-Id: <1721367736-30156-5-git-send-email-hongxing.zhu@nxp.com>
Date: Fri, 19 Jul 2024 13:42:14 +0800
From: Richard Zhu <hongxing.zhu@....com>
To: tj@...nel.org,
	dlemoal@...nel.org,
	cassel@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	festevam@...il.com
Cc: linux-ide@...r.kernel.org,
	stable@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	imx@...ts.linux.dev,
	kernel@...gutronix.de,
	Richard Zhu <hongxing.zhu@....com>
Subject: [PATCH v4 4/6] ata: ahci_imx: Add 32bits DMA limit for i.MX8QM AHCI SATA

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

Signed-off-by: Richard Zhu <hongxing.zhu@....com>
---
 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