[PATCH v3 1/1] PCI: layerscape-ep: set 64-bit DMA mask

Frank Li Frank.Li at nxp.com
Wed Sep 27 00:04:45 AEST 2023

From: Guanhua Gao <guanhua.gao at nxp.com>

Set DMA mask and coherent DMA mask to enable 64-bit addressing.

Signed-off-by: Guanhua Gao <guanhua.gao at nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou at nxp.com>
Signed-off-by: Frank Li <Frank.Li at nxp.com>

    change from v2 to v3
    - remove check return value of dma_set_mask_and_coherent. 64bit mask always
    return success.
    - remove redundate comments
    change from v1 to v2
    - Remove 32bit DMA mask set.

 drivers/pci/controller/dwc/pci-layerscape-ep.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index de4c1758a6c3..2c2c9aaa8700 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -249,6 +249,8 @@ static int __init ls_pcie_ep_probe(struct platform_device *pdev)
 	pcie->big_endian = of_property_read_bool(dev->of_node, "big-endian");
+	dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
 	platform_set_drvdata(pdev, pcie);
 	ret = dw_pcie_ep_init(&pci->ep);

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