diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index c73df50..8009a42 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -119,10 +119,18 @@
 	hex
 	default 0x10000
 
-config MAX_ROOT_PORTS
+config MAX_PCH_ROOT_PORTS
 	int
 	default 12
 
+config MAX_CPU_ROOT_PORTS
+	int
+	default 3
+
+config MAX_ROOT_PORTS
+	int
+	default MAX_PCH_ROOT_PORTS
+
 config MAX_PCIE_CLOCKS
 	int
 	default 12