diff --git a/arch/arm/mach-rockchip/rk3288/Makefile b/arch/arm/mach-rockchip/rk3288/Makefile
index 3f9900d..6f62375 100644
--- a/arch/arm/mach-rockchip/rk3288/Makefile
+++ b/arch/arm/mach-rockchip/rk3288/Makefile
@@ -5,4 +5,5 @@
 #
 
 obj-y += reset_rk3288.o
+obj-y += sdram_rk3288.o
 obj-y += syscon_rk3288.o