Index: src/southbridge/nvidia/mcp55/mcp55_fadt.c
===================================================================
--- src/southbridge/nvidia/mcp55/mcp55_fadt.c	(revision 6142)
+++ src/southbridge/nvidia/mcp55/mcp55_fadt.c	(working copy)
@@ -4,6 +4,7 @@
  * Copyright (C) 2004 Nick Barker <nick.barker9@btinternet.com>
  * Copyright (C) 2007 Rudolf Marek <r.marek@assembler.cz>
  * Copyright (C) 2009 Harald Gutmann <harald.gutmann@gmx.net>
+ * Copyright (C) 2010 David Robinson <drobinson@bluechiptechnology.co.uk>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -69,6 +70,7 @@
 	fadt->pm2_cnt_blk = pm_base + 0x1c;
 	fadt->pm_tmr_blk = pm_base + 0x8;
 	fadt->gpe0_blk = pm_base + 0x20;
+	outl(0x1, pm_base + 0x4);	/*set SCI_EN */
 
 	fadt->pm1_evt_len = 4;
 	fadt->pm1_cnt_len = 2;