diff --git a/board/renesas/stout/cpld.c b/board/renesas/stout/cpld.c
index cffdc3e..e6c2051 100644
--- a/board/renesas/stout/cpld.c
+++ b/board/renesas/stout/cpld.c
@@ -8,6 +8,7 @@
  */
 
 #include <common.h>
+#include <cpu_func.h>
 #include <asm/io.h>
 #include <asm/gpio.h>
 #include "cpld.h"