[PATCH v2 4/5] PCI: uniphier: Add iATU register support

[Kunihiko Hayashi]

This gets iATU register area from reg property. In Synopsis 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@xxxxxxxxxxxxx>
---
 drivers/pci/controller/dwc/pcie-uniphier.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
index a8dda39..493f105 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier.c
@@ -447,6 +447,13 @@ static int uniphier_pcie_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->pci.dbi_base))
 		return PTR_ERR(priv->pci.dbi_base);
 
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "atu");
+	if (res) {
+		priv->pci.atu_base = devm_pci_remap_cfg_resource(dev, res);
+		if (IS_ERR(priv->pci.atu_base))
+			priv->pci.atu_base = NULL;
+	}
+
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "link");
 	priv->base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(priv->base))
-- 
2.7.4