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mb/google/skyrim/var/winterhold: adjust the eDP panel power sequence 

Set edp_panel_t9_ms to 8ms which means it  will delay 8ms
between backlight off and vary backlight off.

BUG=b:271704149
BRANCH=Skyrim
TEST=Build; Verify the UPD was passed to system integrated table;

Signed-off-by: Chris Wang <chris.wang@amd.corp-partner.google.com>
Change-Id: I952d05b18e29cf30256f43562a5052007c5c6268
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74790
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Chris Wang 2023-04-26 19:57:12 +08:00 committed by Martin L Roth
parent f927026536
commit 544e2aa215
1 changed files with 1 additions and 0 deletions
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1
src/mainboard/google/skyrim/variants/winterhold/overridetree.cb
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@ -114,6 +114,7 @@ chip soc/amd/mendocino
# The unit is set to one per ms
register "edp_panel_t8_ms" = "112"
register "edp_panel_t9_ms" = "8"
device ref gpp_bridge_1 on
# Required so the NVMe gets placed into D3 when entering S0i3.