[V2,2/4] PCI: tegra: Map configuration space as nGnRnE
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Message ID 20201029051839.11245-3-vidyas@nvidia.com
State New, archived
Headers show
  • Enhancements to Tegra194 PCIe driver
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Commit Message

Vidya Sagar Oct. 29, 2020, 5:18 a.m. UTC
As specified in the comment for pci_remap_cfgspace() define in
arch/arm64/include/asm/io.h file, PCIe configuration space should be
mapped as nGnRnE. Hence changing to dev_pci_remap_cfgspace() from
devm_ioremap_resource() for mapping DBI space as that is nothing but
the root port's own configuration space.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
* Changed 'Strongly Ordered' to 'nGnRnE'

 drivers/pci/controller/dwc/pcie-tegra194.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

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diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index b172b1d49713..7a0c64436861 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -2108,7 +2108,9 @@  static int tegra_pcie_dw_probe(struct platform_device *pdev)
 	pcie->dbi_res = dbi_res;
-	pci->dbi_base = devm_ioremap_resource(dev, dbi_res);
+	pci->dbi_base = devm_pci_remap_cfgspace(dev,
+						dbi_res->start,
+						resource_size(dbi_res));
 	if (IS_ERR(pci->dbi_base))
 		return PTR_ERR(pci->dbi_base);