diff --git a/cfg/imx-rt-rpmsg.cfg b/cfg/imx-rt-rpmsg.cfg
new file mode 100644
index 00000000..35060ac6
--- /dev/null
+++ b/cfg/imx-rt-rpmsg.cfg
@@ -0,0 +1,2 @@
+# Enable the generic software mailbox
+CONFIG_GENERIC_SOFTWARE_MAILBOX=y