The DW PCIe RC IP-core is synthesized with the 64-bits AXI address bus. Since the device is also equipped with the eDMA engine we need to explicitly set the device DMA-mask so the DMA-engine clients would be able to allocate the data buffers from the DMA-able memory space. Signed-off-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx> --- Changelog v7: - This is a new patch added on v7 stage of the series. (@Robin) --- drivers/pci/controller/dwc/pcie-bt1.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-bt1.c b/drivers/pci/controller/dwc/pcie-bt1.c index 3346770e6654..95a723a6fd46 100644 --- a/drivers/pci/controller/dwc/pcie-bt1.c +++ b/drivers/pci/controller/dwc/pcie-bt1.c @@ -583,6 +583,10 @@ static int bt1_pcie_add_port(struct bt1_pcie *btpci) struct device *dev = &btpci->pdev->dev; int ret; + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); + if (ret) + return ret; + btpci->dw.version = DW_PCIE_VER_460A; btpci->dw.dev = dev; btpci->dw.ops = &bt1_pcie_ops; -- 2.39.0
