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eaddeb502e
Enable the VBUS detection to be able to re-negociate a PD contract when we are losing power. The VBUS_WAKE GPIO is broken on the current hardware (not triggered when VBUS is 5V), so we fall back on using the ADC on VBUS_SENSE. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=none TEST=With a Firefly connected to a Zinger,"fault" the power supply to get it to turn off its output. See Firefly detecting the cut-off and re-negotiating voltage. Change-Id: Ia5f0734cbd8f20d84ce170cea191410bb72a87c3 Reviewed-on: https://chromium-review.googlesource.com/206944 Tested-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-by: Alec Berg <alecaberg@chromium.org> Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit