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authorNico Rikken <nico@nicorikken.eu>2018-05-05 09:58:15 +0200
committerPatrick Georgi <pgeorgi@google.com>2018-06-21 09:45:34 +0000
commit28cdd4c8d36c49cbe9b171a2af6077fa8a253498 (patch)
treec101c773680998dcb850d47a0c552361e3487527 /src/mainboard
parent91b76f19f4b49f6df4380c0a1b45e4f9a58f718a (diff)
downloadcoreboot-28cdd4c8d36c49cbe9b171a2af6077fa8a253498.tar.xz
mb/lenovo/t520: Add Dual Graphics CMOS support
Adds the CMOS option for Dual Graphics, as is present in more Lenovo models already. Enabling this option ensures that the NVIDIA GPU is powered. More PCI devices can be observed when activating this setting. It was verified on a W520, also by loading a VGA option ROM and achieving a working Dual Graphics system. The CMOS default has been kept to 'Integrated Only', as the usage of Dual Graphics requires an option ROM and drains the battery more quickly. Change-Id: I41ccabd4554ca019684edd6f8b1c23679212c59f Signed-off-by: Nico Rikken <nico@nicorikken.eu> Reviewed-on: https://review.coreboot.org/26114 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Diffstat (limited to 'src/mainboard')
-rw-r--r--src/mainboard/lenovo/t520/cmos.layout2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/t520/cmos.layout b/src/mainboard/lenovo/t520/cmos.layout
index 3a82459ad5..7d2c821c05 100644
--- a/src/mainboard/lenovo/t520/cmos.layout
+++ b/src/mainboard/lenovo/t520/cmos.layout
@@ -3,6 +3,7 @@
##
## Copyright (C) 2007-2008 coresystems GmbH
## Copyright (C) 2014 Vladimir Serbinenko
+## Copyright (C) 2018 Nico Rikken
##
## 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
@@ -128,6 +129,7 @@ enumerations
11 6 224M
12 0 Integrated Only
12 1 Discrete Only
+12 2 Dual Graphics
13 0 Disable
13 1 AC and battery
13 2 AC only