Based on Fibocom HW user manual RESET should be deasserted at least 20ms after the power on pin.
The design for the reset pin is open drain connected to a pull up, so it is set to high-Z (configured as GPIO in) after 20ms.
BUG=b:152013143
BRANCH=none
TEST=traced the signals using a scope to verify timing is met.
Signed-off-by: Alex Levin <levinale@chromium.org>
Change-Id: I7c947d1bc4cce1f97383a2f2c254986e182661c5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41356
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
9e8dd06cd4