Kernel need the default brightness steps. Otherwise following error
messages are observed in the kernel:
[Firmware Bug]: ACPI(GFX0) defines _DOD but not _DOS
ACPI BIOS Error (bug): Could not resolve symbol [^^XBCL], AE_NOT_FOUND
ACPI Error: Aborting method \_SB.PCI0.GFX0.LCD0._BCL due to previous
error (AE_NOT_FOUND)
BUG=b:346807006
TEST=Build Brox BIOS image and boot to OS. Ensure that the concerned
error messages are resolved. Ensure that the backlight controls are
functional.
Change-Id: Icd569b0efef31908edb1b7dc384e60a16fc5bd0c
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83152
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shelley Chen <shchen@google.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
e35d7e8d14