[M] Change in coreboot[master]: mb/google/geralt: Fix MIPI panel power on/off sequence

[Ruihai Zhou (Code Review)]

Attention is currently required from: Hung-Te Lin, Paul Menzel, Ruihai Zhou, Yidi Lin, Yu-Ping Wu, cong yang.

Hello Hung-Te Lin, Yidi Lin, Yu-Ping Wu, build bot (Jenkins), cong yang,

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

https://review.coreboot.org/c/coreboot/+/75512?usp=email

to look at the new patch set (#4).

The following approvals got outdated and were removed:
Code-Review+1 by cong yang, Verified+1 by build bot (Jenkins)

Change subject: mb/google/geralt: Fix MIPI panel power on/off sequence
......................................................................

mb/google/geralt: Fix MIPI panel power on/off sequence

Based on the power sequence of the panel [1], the power on T2 sequence
VSP to VSN should be larger than 1ms, and the power off T2 sequence VSP
to VSN should be larger than 0ms. We modify the power sequence to meet
the datasheet requirement.

[1] B5 TV110C9M-LL0 Product Specification Rev.P0

Signed-off-by: Ruihai Zhou 
Change-Id: I4ccb5be04062a0516f84a054ff3f40afbf5279be
---
M src/mainboard/google/geralt/display.c
M src/mainboard/google/geralt/display.h
M src/mainboard/google/geralt/panel.c
M src/mainboard/google/geralt/panel.h
M src/mainboard/google/geralt/panel_geralt.c
M src/soc/mediatek/mt8188/Makefile.inc
6 files changed, 18 insertions(+), 71 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/12/75512/4