This gets iATU register area from reg property. In Synopsys DWC version
4.80 or later, since iATU register area is separated from core register
area, this area is necessary to get from DT independently.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
---
 drivers/pci/controller/dwc/pcie-uniphier.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
index 55a7166..93ef608 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier.c

@@ -471,6 +471,11 @@ static int uniphier_pcie_probe(struct platform_device *pdev)
        if (IS_ERR(priv->pci.dbi_base))
                return PTR_ERR(priv->pci.dbi_base);

+       priv->pci.atu_base =
+               devm_platform_ioremap_resource_byname(pdev, "atu");
+       if (IS_ERR(priv->pci.atu_base))
+               priv->pci.atu_base = NULL;