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| author | Arthur Heymans <arthur@aheymans.xyz> | 2017-01-02 16:16:45 +0100 |
|---|---|---|
| committer | Alexander Couzens <lynxis@fe80.eu> | 2017-02-19 19:15:40 +0100 |
| commit | f9d5308690e96002dbeab77b78e499dcd2d3a42f (patch) | |
| tree | deab6f631bc590927ca65fbb9a13f9f3da3f1bf7 /src/mainboard/lenovo/t400/devicetree.cb | |
| parent | 3fee215a3e0ee121f5764a4e9fe194b249e42009 (diff) | |
mb/lenovo/t400: Implement hybrid graphic in romstage
The hybrid driver select by DRIVERS_LENOVO_HYBRID_GRAPHICS doesn't work
for t400/t500.
Replace it with a custom romstage implementation.
Tested on Lenovo T500 with dual graphics:
* Intel Native GFX init
* AMD VBios
* GNU Linux 4.8.13
* SeaBios as payload
* Discrete is working (44 W)
* Integrated is working (24 W)
* Switchable is working (34 W)
** Both GPUs are enabled, with Intel being connected to the panel
** DRI_PRIME allows to use AMD GPU
** ACPI doesn't seem to work (no vgaswitcheroo)
Depends on Change-Id: I4dc00005270240c048272b2e4f52ae46ba1c9422
Depends on Change-Id: If389016f3bb0c4c2fd0b826914997a87a9137201
Change-Id: I7496876e9b434d4a2388e1ede27ac604670339b7
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/18010
Tested-by: build bot (Jenkins)
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Diffstat (limited to 'src/mainboard/lenovo/t400/devicetree.cb')
0 files changed, 0 insertions, 0 deletions