diff --git a/src/soc/intel/tigerlake/include/soc/iomap.h b/src/soc/intel/tigerlake/include/soc/iomap.h
index cdd370b6c1..dec1950964 100644
--- a/src/soc/intel/tigerlake/include/soc/iomap.h
+++ b/src/soc/intel/tigerlake/include/soc/iomap.h
@@ -57,7 +57,7 @@
 #define VTVC0_BASE_SIZE		0x1000
 
 #define REG_BASE_ADDRESS	0xfb000000
-#define REG_BASE_SIZE		0x1000
+#define REG_BASE_SIZE		0x4000
 
 #define HPET_BASE_ADDRESS	0xfed00000