diff --git a/build/configs/rtl8730e/loadable_ext_ddr/defconfig b/build/configs/rtl8730e/loadable_ext_ddr/defconfig
index 7728be1919..a6cbc0c427 100644
--- a/build/configs/rtl8730e/loadable_ext_ddr/defconfig
+++ b/build/configs/rtl8730e/loadable_ext_ddr/defconfig
@@ -638,6 +638,8 @@ CONFIG_TOUCH_IST415=y
 CONFIG_TOUCH_POLL=y
 # CONFIG_TOUCH_CALLBACK is not set
 CONFIG_TOUCH_NPOLLWAITERS=2
+CONFIG_TOUCH_BUFSIZE=30
+CONFIG_IST415_WORKPRIORITY=201
 CONFIG_MMINFO=y
 CONFIG_PRODCONFIG=y
 # CONFIG_ANALOG is not set