diff --git a/src/soc/intel/alderlake/fsp_params.c b/src/soc/intel/alderlake/fsp_params.c
index ec4281d4b5..592afb8d97 100644
--- a/src/soc/intel/alderlake/fsp_params.c
+++ b/src/soc/intel/alderlake/fsp_params.c
@@ -60,6 +60,12 @@ enum fsp_end_of_post {
 };
 
 static const struct slot_irq_constraints irq_constraints[] = {
+	{
+		.slot = SA_DEV_SLOT_CPU_1,
+		.fns = {
+			FIXED_INT_PIRQ(SA_DEVFN_CPU_PCIE1_0, PCI_INT_A, PIRQ_A),
+		},
+	},
 	{
 		.slot = SA_DEV_SLOT_IGD,
 		.fns = {