[coreboot-gerrit] Change in coreboot[master]: mb/google/kohaku: Update reset timing for digitizer device

[shkim (Code Review)]

Hello Tim Wawrzynczak, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/37911

to look at the new patch set (#3).

Change subject: mb/google/kohaku: Update reset timing for digitizer device
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mb/google/kohaku: Update reset timing for digitizer device

This change puts delays for digitizer device's power on sequence.

- According to device's spec, we should hold reset assertion for 100ms
in its power on sequence. 100ms of "enable_delay_ms" is for it.
- We found the driver binding failure issue could be cleared with 100ms
of "reset_delay_ms". It seems the IC need some time before communication
after de-assertion of reset.

BUG=b:129159369
BRANCH=firmware-hatch-12672.B
TEST=Verified the reset timing and driver bound successfully.

Signed-off-by: Seunghwan Kim 
Change-Id: Iccb33c13c9a390a2c971325c74c0c4ad4b08618e
---
M src/mainboard/google/hatch/variants/kohaku/overridetree.cb
1 file changed, 2 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/11/37911/3