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For boards using max17055 and dumb battery, we can always read battery parameters from max17055 regs, even if the read values are out of whack. So it doesn't make sense to determine battery is present because we can read these parameters from max17055. Meanwhile, we have to set CONFIG.TSEL on max17055 as early as possible because this is required for max17055 to detect battery presense. BUG=b:72697658 BRANCH=scarlet TEST=boot scarlet rev3 w/o battery on Type-C/PD chargers Change-Id: Id190f0c2aa5bcd62dbe3edccca6460bf145cff01 Signed-off-by: Philip Chen <philipchen@google.com> Reviewed-on: https://chromium-review.googlesource.com/933702 Commit-Ready: Philip Chen <philipchen@chromium.org> Tested-by: Philip Chen <philipchen@chromium.org> Reviewed-by: Aseda Aboagye <aaboagye@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