[PATCH v3 4/6] PCI: uniphier: Add iATU register support

From: Kunihiko Hayashi
Date: Wed Jun 03 2020 - 04:54:59 EST


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@xxxxxxxxxxxxx>
---
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 a8dda39..ad14e67 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier.c
@@ -447,6 +447,11 @@ 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;
+
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "link");
priv->base = devm_ioremap_resource(dev, res);
if (IS_ERR(priv->base))
--
2.7.4