diff --git a/include/clk-uclass.h b/include/clk-uclass.h
index e76d98e2f6..15ac8867a7 100644
--- a/include/clk-uclass.h
+++ b/include/clk-uclass.h
@@ -100,4 +100,6 @@ struct clk_ops {
 	int (*disable)(struct clk *clk);
 };
 
+#define clk_div_mask(width)		((1 << (width)) - 1)
+
 #endif