diff --git a/src/soc/amd/phoenix/Makefile.mk b/src/soc/amd/phoenix/Makefile.mk
index 9c775cc..be0a022 100644
--- a/src/soc/amd/phoenix/Makefile.mk
+++ b/src/soc/amd/phoenix/Makefile.mk
@@ -32,6 +32,7 @@
 ramstage-y	+= graphics.c
 ramstage-y	+= mca.c
 ramstage-y	+= memmap.c
+ramstage-$(CONFIG_SOC_AMD_PHOENIX_OPENSIL) += pci_irq_routing.c
 ramstage-y	+= root_complex.c
 ramstage-y	+= soc_util.c
 ramstage-y	+= xhci.c
diff --git a/src/soc/amd/phoenix/pci_irq_routing.c b/src/soc/amd/phoenix/pci_irq_routing.c
new file mode 100644
index 0000000..5c891c2
--- /dev/null
+++ b/src/soc/amd/phoenix/pci_irq_routing.c
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <amdblocks/amd_pci_util.h>
+#include <console/console.h>
+#include <types.h>
+
+const struct pci_routing_info *get_pci_routing_table(size_t *entries)
+{
+	/* TODO: still needs to be implemented for the non-FSP case */
+	printk(BIOS_NOTICE, "%s stub: returning empty IRQ routing table\n", __func__);
+
+	*entries = 0;
+	return NULL;
+}