diff --git a/board/freescale/ls1021aqds/ddr.c b/board/freescale/ls1021aqds/ddr.c
index d16a69f..2ee8749 100644
--- a/board/freescale/ls1021aqds/ddr.c
+++ b/board/freescale/ls1021aqds/ddr.c
@@ -8,6 +8,7 @@
 #include <fsl_ddr_sdram.h>
 #include <fsl_ddr_dimm_params.h>
 #include <asm/io.h>
+#include <asm/arch/clock.h>
 #include "ddr.h"
 
 DECLARE_GLOBAL_DATA_PTR;