[PATCH] pci: zynqmp: Fix the pcireg base

[Venkatesh Yadav Abbarapu]

The pcireg base is not assigned to any address, reading the
pcireg base with PS_LINKUP_OFFSET which is incorrect and
giving random values. So update the pcireg base from
devicetree so that we can read the valid PCIE link status
and PHY ready status.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu at amd.com>
---
 drivers/pci/pcie-xilinx-nwl.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/pci/pcie-xilinx-nwl.c b/drivers/pci/pcie-xilinx-nwl.c
index 7ef2bdf57b5..e03ab3be912 100644
--- a/drivers/pci/pcie-xilinx-nwl.c
+++ b/drivers/pci/pcie-xilinx-nwl.c
@@ -303,6 +303,13 @@ static int nwl_pcie_parse_dt(struct nwl_pcie *pcie)
 		return PTR_ERR(pcie->breg_base);
 	pcie->phys_breg_base = res.start;
 
+	ret = dev_read_resource_byname(dev, "pcireg", &res);
+	if (ret)
+		return ret;
+	pcie->pcireg_base = devm_ioremap(dev, res.start, resource_size(&res));
+	if (IS_ERR(pcie->pcireg_base))
+		return PTR_ERR(pcie->pcireg_base);
+
 	ret = dev_read_resource_byname(dev, "cfg", &res);
 	if (ret)
 		return ret;
-- 
2.34.1