Change in coreboot[master]: mb/google/poppy/variant/atlas: Reset bluetooth on boot

[Caveh Jalali (Code Review)]

Hello build bot (Jenkins), Tim Wawrzynczak, Nick Vaccaro,

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

https://review.coreboot.org/c/coreboot/+/46120

to look at the new patch set (#2).

Change subject: mb/google/poppy/variant/atlas: Reset bluetooth on boot
......................................................................

mb/google/poppy/variant/atlas: Reset bluetooth on boot

This forces a reset of the integrated bluetooth device on AP reset and
re-enables it before handing control to the kernel. We advertise a
reset_gpio to the kernel over ACPI, but the kernel BT driver only uses
this to reset BT when there are command timeouts. If the BT chip is
already running firmware from a previous boot, the driver makes no
attempt to update the BT firmware by resetting it, even when it does
not match the current version. This can lead to unexpected behavior
across system upgrades. So, we need to reset the BT chip in coreboot
to make sure the BT driver loads current firmware.

BUG=b:168757348
TEST=boot on atlas

Signed-off-by: Caveh Jalali 
Change-Id: I361caa49e82aa086c3c35962164fb078fa30139e
---
M src/mainboard/google/poppy/variants/atlas/gpio.c
1 file changed, 2 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/20/46120/2