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| author | Nico Rikken <nico@nicorikken.eu> | 2018-05-05 09:58:15 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-06-21 09:45:34 +0000 |
| commit | 28cdd4c8d36c49cbe9b171a2af6077fa8a253498 (patch) | |
| tree | c101c773680998dcb850d47a0c552361e3487527 /src/mainboard/lenovo/t520 | |
| parent | 91b76f19f4b49f6df4380c0a1b45e4f9a58f718a (diff) | |
| download | coreboot-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/lenovo/t520')
| -rw-r--r-- | src/mainboard/lenovo/t520/cmos.layout | 2 |
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 |