diff --git a/arch/arm/mach-rockchip/rk3188/Makefile b/arch/arm/mach-rockchip/rk3188/Makefile
index 2dc9511de7..7fa010405b 100644
--- a/arch/arm/mach-rockchip/rk3188/Makefile
+++ b/arch/arm/mach-rockchip/rk3188/Makefile
@@ -6,6 +6,5 @@
 
 ifndef CONFIG_TPL_BUILD
 obj-y += clk_rk3188.o
-obj-y += sdram_rk3188.o
 obj-y += syscon_rk3188.o
 endif
diff --git a/drivers/ram/rockchip/Makefile b/drivers/ram/rockchip/Makefile
index bfc016fd54..50b9d517a7 100644
--- a/drivers/ram/rockchip/Makefile
+++ b/drivers/ram/rockchip/Makefile
@@ -5,4 +5,5 @@
 #
 
 obj-$(CONFIG_ROCKCHIP_RK3368) = dmc-rk3368.o
+obj-$(CONFIG_ROCKCHIP_RK3188) = sdram_rk3188.o
 obj-$(CONFIG_ROCKCHIP_RK3399) = sdram_rk3399.o
diff --git a/arch/arm/mach-rockchip/rk3188/sdram_rk3188.c b/drivers/ram/rockchip/sdram_rk3188.c
similarity index 100%
rename from arch/arm/mach-rockchip/rk3188/sdram_rk3188.c
rename to drivers/ram/rockchip/sdram_rk3188.c