diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index a3ac92b19acac8267ff5ec922e1bdfccd2b9ca06..e3710d7e260aa6d31b6d5f46f811ca49f3c65b86 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -121,6 +121,9 @@
 
 #define PORT_IP3106	70
 
+/* Hilscher netx */
+#define PORT_NETX	71
+
 #ifdef __KERNEL__
 
 #include <linux/config.h>