Merge branch 'pci/controller/xilinx-nwl'

- Clear bootloader E_ECAM_CONTROL before merging in the new driver value
  (Jani Nurminen)

* pci/controller/xilinx-nwl:
  PCI: xilinx-nwl: Fix ECAM programming

Author: bjorn-helgaas

drivers/pci/controller/pcie-xilinx-nwl.c

@@ -718,9 +718,10 @@ static int nwl_pcie_bridge_init(struct nwl_pcie *pcie)
 	nwl_bridge_writel(pcie, nwl_bridge_readl(pcie, E_ECAM_CONTROL) |
 			  E_ECAM_CR_ENABLE, E_ECAM_CONTROL);
 
-	nwl_bridge_writel(pcie, nwl_bridge_readl(pcie, E_ECAM_CONTROL) |
-			  (NWL_ECAM_MAX_SIZE << E_ECAM_SIZE_SHIFT),
-			  E_ECAM_CONTROL);
+	ecam_val = nwl_bridge_readl(pcie, E_ECAM_CONTROL);
+	ecam_val &= ~E_ECAM_SIZE_LOC;
+	ecam_val |= NWL_ECAM_MAX_SIZE << E_ECAM_SIZE_SHIFT;
+	nwl_bridge_writel(pcie, ecam_val, E_ECAM_CONTROL);
 
 	nwl_bridge_writel(pcie, lower_32_bits(pcie->phys_ecam_base),
 			  E_ECAM_BASE_LO);