diff --git a/include/linux/units.h b/include/linux/units.h
index 62149b5082e1..b61e3f6d5099 100644
--- a/include/linux/units.h
+++ b/include/linux/units.h
@@ -20,6 +20,10 @@
 #define PICO	1000000000000ULL
 #define FEMTO	1000000000000000ULL
 
+#define HZ_PER_KHZ		1000UL
+#define KHZ_PER_MHZ		1000UL
+#define HZ_PER_MHZ		1000000UL
+
 #define MILLIWATT_PER_WATT	1000UL
 #define MICROWATT_PER_MILLIWATT	1000UL
 #define MICROWATT_PER_WATT	1000000UL