[coreboot-gerrit] Change in coreboot[master]: mb/google/drallion: Fine tune touch screen power sequence

[EricR Lai (Code Review)]

Hello Mathew King, Roy Mingi Park, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/38665

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

Change subject: mb/google/drallion: Fine tune touch screen power sequence
......................................................................

mb/google/drallion: Fine tune touch screen power sequence

Follow HW change to use GPP_D15 as TS_RST. And change GPP_B21 from pltrst
to deep in order to met power off timing.

BUG=b:143733039
TEST=Check touch screen is functional in s0 and resume from s0ix

Signed-off-by: Eric Lai 
Change-Id: Ieec7eb78a05e653f271e348ed11f7e31c08bd5dc
---
M src/mainboard/google/drallion/variants/drallion/devicetree.cb
M src/mainboard/google/drallion/variants/drallion/gpio.c
2 files changed, 17 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/65/38665/4