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bffb196a07
After VBUS is up, there is a delay of ~500ms for rt946x to determine 'VBUS is ready'. But we need charger_task to detect AC presence and then set a proper sleep time immediately. When using fusb302 to detect VBUS, I almost don't see any delay. BUG=b:71520398 BRANCH=none TEST=Confirm BATTERY LED turns on immediately when AC is plugged in a Scarlet in G3. Change-Id: If1d6d40081b5822eeb9e012115f8deef172def37 Signed-off-by: Philip Chen <philipchen@google.com> Reviewed-on: https://chromium-review.googlesource.com/869420 Commit-Ready: Philip Chen <philipchen@chromium.org> Tested-by: Philip Chen <philipchen@chromium.org> Reviewed-by: Philip Chen <philipchen@chromium.org> Reviewed-by: Shawn N <shawnn@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