diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 2bcc86ee14f4..23b8dda70cb2 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1043,7 +1043,10 @@ static const struct pci_epc_features imx8m_pcie_epc_features = {
 	.linkup_notifier = false,
 	.msi_capable = true,
 	.msix_capable = false,
-	.reserved_bar = 1 << BAR_1 | 1 << BAR_3,
+	.reserved_bar = 1 << BAR_1 | 1 << BAR_3 | 1 << BAR_5,
+	.bar_fixed_size = {
+		[BAR_4] = SZ_256,
+	},
 	.align = SZ_64K,
 };