This signal gets deasserted by the WWAN modem to reactivate the PCIe
link when in low power mode. In order to handle this efficiently, the
kernel needs to set up an interrupt.
BUG=b:301150499
TEST=Compiled and tested on google/redrix
Signed-off-by: Paweł Anikiel <panikiel@google.com>
Change-Id: I37f6836aefe4a374eaff3e4bc11358be274cf563
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78416
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
97cd5bdeae