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PCI: bt1: Set 64-bit DMA mask

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The DW PCIe Root Port IP core is synthesized with the 64-bit AXI address
bus.  Since the device is also equipped with the eDMA engine, explicitly
set the device DMA mask so DMA engine clients can allocate data buffers
anywhere in the 64-bit memory space.

Link: https://lore.kernel.org/r/20230113171409.30470-27-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Serge Semin
2023-01-13 20:14:08 +03:00
committed by Bjorn Helgaas
parent 6c784e21b3
commit 68373f2c0f
1 changed files with 4 additions and 0 deletions
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4
drivers/pci/controller/dwc/pcie-bt1.c
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@@ -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;