diff --git a/drivers/pci/pcie_fsl.c b/drivers/pci/pcie_fsl.c
index 3c2a2a47611..cc6efdd5b46 100644
--- a/drivers/pci/pcie_fsl.c
+++ b/drivers/pci/pcie_fsl.c
@@ -58,8 +58,9 @@ static int fsl_pcie_read_config(const struct udevice *bus, pci_dev_t bdf,
 		return 0;
 	}
 
-	bdf = bdf - PCI_BDF(dev_seq(bus), 0, 0);
-	val = bdf | (offset & 0xfc) | ((offset & 0xf00) << 16) | 0x80000000;
+	val = PCI_CONF1_EXT_ADDRESS(PCI_BUS(bdf) - dev_seq(bus),
+				    PCI_DEV(bdf), PCI_FUNC(bdf),
+				    offset);
 	out_be32(&regs->cfg_addr, val);
 
 	sync();
@@ -94,8 +95,9 @@ static int fsl_pcie_write_config(struct udevice *bus, pci_dev_t bdf,
 	if (fsl_pcie_addr_valid(pcie, bdf))
 		return 0;
 
-	bdf = bdf - PCI_BDF(dev_seq(bus), 0, 0);
-	val = bdf | (offset & 0xfc) | ((offset & 0xf00) << 16) | 0x80000000;
+	val = PCI_CONF1_EXT_ADDRESS(PCI_BUS(bdf) - dev_seq(bus),
+				    PCI_DEV(bdf), PCI_FUNC(bdf),
+				    offset);
 	out_be32(&regs->cfg_addr, val);
 
 	sync();