[M] Change in coreboot[main]: mb/google/nissa/var/rull: Match VBT with SSFC

[Rui Zhou (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eric Lai, Jayvik Desai, Kapil Porwal, Nick Vaccaro, Subrata Banik.

Hello Dinesh Gehlot, Eric Lai, Jayvik Desai, Kapil Porwal, Nick Vaccaro, Subrata Banik,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/85875?usp=email

to look at the new patch set (#2).

Change subject: mb/google/nissa/var/rull: Match VBT with SSFC
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mb/google/nissa/var/rull: Match VBT with SSFC

We want to configure different VBT timings for panels of different sizes
and distinguish them through SSFC. We select the reserved bit 6 of SSFC
as the flag bit. When using a AUO panel, set this bit to 1.
Without splitting, the platform_BootPerf test will fail.

BUG=b:379835056
TEST=can match VBT with SSFC
-When SSFC is set to 0x40:
$ cat /sys/firmware/log | grep vbt
Bit 6 of SSFC is 1, use vbt-teliks-auo.bin

Change-Id: I413179af0a1346b7d21f17d728d6846c30707978
Signed-off-by: Rui Zhou 
---
M src/mainboard/google/brya/variants/rull/variant.c
1 file changed, 58 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/75/85875/2