diff --git a/arch/arm/configs/rk30_sdk_defconfig b/arch/arm/configs/rk30_sdk_defconfig
index 8b3d1a43fa0a..721a2a78dc5e 100644
--- a/arch/arm/configs/rk30_sdk_defconfig
+++ b/arch/arm/configs/rk30_sdk_defconfig
@@ -22,7 +22,6 @@ CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y
 CONFIG_ARCH_RK30=y
-CONFIG_DDR_SDRAM_FREQ=456
 CONFIG_WIFI_CONTROL_FUNC=y
 # CONFIG_SWP_EMULATE is not set
 CONFIG_FIQ_DEBUGGER=y