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SERIIRQ# is by default deasserted level high. However, when using eSPI, SERIRQ# is routed over virtual wire as interrupt event. As per eSPI base spec (doc#327432), all virtual wire interrupt events are deasserted level low. Thus, it is necessary to configure this interrupt as inverted. ITE hardware takes care of routing the SERIRQ# signal appropriately over eSPI/LPC depending upon the selected mode. BUG=b:79897267 BRANCH=None TEST=Verified using evtest that keypresses are properly identified on the OS side. Change-Id: Ie3b92f20fa915ba8f17dcbcb600ebfe5cbfb4d57 Signed-off-by: Dino Li <dino.li@ite.corp-partner.google.com> Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://chromium-review.googlesource.com/1069570 Commit-Ready: Furquan Shaikh <furquan@chromium.org> Tested-by: Furquan Shaikh <furquan@chromium.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Jett Rink <jettrink@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly