soc/intel/ehl: Provide function to change PHY-to-MAC IRQ polarity

EHL MAC side expects a rising edge signal for an IRQ. Based on the
mainboard wiring it could be necessary to change the interrupt polarity.
This patch provides the functionality to invert a falling edge signal
that comes from an external PHY. The inverting can be activated via
devicetree parameter.

Change-Id: Ia314014c7cacbeb72629c773c8c0bb5f002a3f54
Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63888
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>

0 files changed, 0 insertions, 0 deletions