d2f678d3bd
The vbt was extracted from the option rom found on stock images. The vbt.bin is the same across all variants. The VBT has a modified BDB block 43, the 'Backlight info block' such that the inverter type for the panel in use is set to 2 (BDB_BACKLIGHT_TYPE_PWM) instead of 0 (BDB_BACKLIGHT_TYPE_NONE). This only seems to matter on Windows, as without it changing the backlight duty cycle does not work. Change-Id: I82c72c561e1058e0b77d80baf330b64f7c6b08e3 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/30487 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-by: Tristan Corrick <tristan@corrick.kiwi> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> |
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.. | ||
acpi | ||
variants | ||
acpi_tables.c | ||
board_info.txt | ||
chromeos.c | ||
chromeos.fmd | ||
cmos.layout | ||
data.vbt | ||
dsdt.asl | ||
ec.c | ||
ec.h | ||
gma-mainboard.ads | ||
Kconfig | ||
Kconfig.name | ||
mainboard.c | ||
Makefile.inc | ||
onboard.h | ||
romstage.c | ||
smihandler.c | ||
thermal.h | ||
variant.h |