diff --git a/src/soc/intel/denverton_ns/Kconfig b/src/soc/intel/denverton_ns/Kconfig
index e8e563c3..c657285 100644
--- a/src/soc/intel/denverton_ns/Kconfig
+++ b/src/soc/intel/denverton_ns/Kconfig
@@ -93,6 +93,9 @@
 	int
 	default 100
 
+config CPU_XTAL_HZ
+	default 24000000
+
 config SMM_TSEG_SIZE
 	hex
 	default 0x200000