mb/ocp/deltalake: Pull POST complete pin low before booting payload

Delta Lake uses GPIO pin GPP_B20 for POST complete event,
BIOS needs to pull this pin low for BIC (Bridge IC) to start
reading sensors.

Tested=On Delta Lake oBMC, bic-util slotx --get_gpio to confirm
the pin is low.

Change-Id: I7e05f8a7caead8ee0632af4ff60ccd8b2412b3dd
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43162
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

0 files changed, 0 insertions, 0 deletions