diff --git a/src/soc/amd/cezanne/pcie_gpp.c b/src/soc/amd/cezanne/pcie_gpp.c
index 00fbffb..0a6bfe2 100644
--- a/src/soc/amd/cezanne/pcie_gpp.c
+++ b/src/soc/amd/cezanne/pcie_gpp.c
@@ -3,6 +3,7 @@
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
+#include <device/pciexp.h>
 
 static struct device_operations internal_pcie_gpp_ops = {
 	.read_resources		= pci_bus_read_resources,
@@ -17,3 +18,23 @@
 	.vendor			= PCI_VENDOR_ID_AMD,
 	.device			= PCI_DEVICE_ID_AMD_FAM17H_MODEL60H_PCIE_GPP_BUSABC,
 };
+
+static struct device_operations external_pcie_gpp_ops = {
+	.read_resources		= pci_bus_read_resources,
+	.set_resources		= pci_dev_set_resources,
+	.enable_resources	= pci_bus_enable_resources,
+	.scan_bus		= pciexp_scan_bridge,
+	.reset_bus		= pci_bus_reset,
+};
+
+static const unsigned short external_pci_gpp_ids[] = {
+	PCI_DEVICE_ID_AMD_FAM17H_MODEL60H_PCIE_GPP_D1,
+	PCI_DEVICE_ID_AMD_FAM17H_MODEL60H_PCIE_GPP_D2,
+	0
+};
+
+static const struct pci_driver external_pcie_gpp_driver __pci_driver = {
+	.ops			= &external_pcie_gpp_ops,
+	.vendor			= PCI_VENDOR_ID_AMD,
+	.devices		= external_pci_gpp_ids,
+};