diff --git a/target/allwinner/mandolin-common/base-files/etc/rc.local b/target/allwinner/mandolin-common/base-files/etc/rc.local
new file mode 100644
index 000000000..6f663d877
--- /dev/null
+++ b/target/allwinner/mandolin-common/base-files/etc/rc.local
@@ -0,0 +1,7 @@
+# Put your custom commands here that should be executed once
+# the system init finished. By default this file does nothing.
+
+# patch for enable usb adb
+cat /sys/devices/platform/soc/usbc0/usb_device
+
+exit 0