Index: uspace/lib/c/include/ipc/dev_iface.h
===================================================================
--- uspace/lib/c/include/ipc/dev_iface.h	(revision 8d7ec69d8e6ebbc57c70b70b6ed09ed1b8ceba0c)
+++ uspace/lib/c/include/ipc/dev_iface.h	(revision 0b8a3e71b801831700b7f6d1c48c084755775ddd)
@@ -52,4 +52,7 @@
 	USBHID_DEV_IFACE,
 
+	/** Interface provided by Real Time Clock devices */
+	CLOCK_DEV_IFACE,
+
 	DEV_IFACE_MAX
 } dev_inferface_idx_t;