mb/google/nissa/var/teliks: 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 12-inch panel, set this bit to 0; when
using an 11-inch panel, set this bit to 1.
Without splitting, the platform_BootPerf test will fail.

BUG=b:374428465
TEST=
1. 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_panel_11_inch.bin
CBFS: Found 'vbt-teliks_panel_11_inch.bin' @0x1c6140 size 0x50f in mcache @0x76adda14

-When SSFC is set to 0x0:
$ cat /sys/firmware/log | grep vbt
Bit 6 of SSFC is 0, use vbt-teliks.bin
CBFS: Found 'vbt-teliks.bin' @0x1c5bc0 size 0x50e in mcache @0x76add9b0

2. can pass platform_BootPerf test
The platform_BootPerf time measured for all SKUs is less than 1.55s.

Change-Id: Ia8fb45aede5ead4826d983760506c366a70643ee
Signed-off-by: Qinghong Zeng <zengqinghong@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84871
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jianeng Ceng <cengjianeng@huaqin.corp-partner.google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>

0 files changed, 0 insertions, 0 deletions