[coreboot-gerrit] Change in coreboot[master]: mb/google/volteer: Set FORCE_PWR low at boot time

[John Zhao (Code Review)]

John Zhao has uploaded a new patch set (#3) to the change originally created by John Zhao. ( https://review.coreboot.org/c/coreboot/+/48649 )

Change subject: mb/google/volteer: Set FORCE_PWR low at boot time
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mb/google/volteer: Set FORCE_PWR low at boot time

While FORCE_PWR is set high, it prevents retimer from entering low power
state. S0ix failure occurs while USB4 Gatkex is connected on Port-0.
This change sets FORCE_PWR(GPP_H10) low. This FORCE_PWR GPIO will be
toggled by kernel through DSM method while updating retimer firmware.

BUG=b:174166586
Cq-Depend: chromium:2594438
TEST=Verifed s0ix cycles with USB4 Gatkex connected on Port-0.

Signed-off-by: John Zhao 
Change-Id: Ie4b442e1078379c522a94bfdc00cd99e6f9b8170
---
M src/mainboard/google/volteer/variants/baseboard/gpio.c
M src/mainboard/google/volteer/variants/terrador/gpio.c
M src/mainboard/google/volteer/variants/todor/gpio.c
M src/mainboard/google/volteer/variants/voema/gpio.c
4 files changed, 4 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/49/48649/3