diff --git a/Documentation/SM501.txt b/Documentation/SM501.txt
index 3a1bd95d3767..6fc656035925 100644
--- a/Documentation/SM501.txt
+++ b/Documentation/SM501.txt
@@ -3,6 +3,11 @@
 
 Copyright 2006, 2007 Simtec Electronics
 
+The Silicon Motion SM501 multimedia companion chip is a multifunction device
+which may provide numerous interfaces including USB host controller USB gadget,
+Asyncronous Serial ports, Audio functions and a dual display video interface.
+The device may be connected by PCI or local bus with varying functions enabled.
+
 Core
 ----