diff --git a/arch/arm/configs/rk29_phonesdk_defconfig b/arch/arm/configs/rk29_phonesdk_defconfig
index 978a6bcc8b3f..5a6b2e468e82 100755
--- a/arch/arm/configs/rk29_phonesdk_defconfig
+++ b/arch/arm/configs/rk29_phonesdk_defconfig
@@ -905,7 +905,7 @@ CONFIG_TOUCHSCREEN_GT818_IIC=y
 # CONFIG_D70_L3188A is not set
 # CONFIG_TOUCHSCREEN_FT5406 is not set
 CONFIG_INPUT_MISC=y
-# CONFIG_INPUT_LPSENSOR_ISL29028 is not set
+CONFIG_INPUT_LPSENSOR_ISL29028=y
 # CONFIG_INPUT_LPSENSOR_CM3602 is not set
 # CONFIG_INPUT_ATI_REMOTE is not set
 # CONFIG_INPUT_ATI_REMOTE2 is not set