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If EC_BL_OVERRIDE is low, backlight will be turned off. To allow AP to
control backlight, set EC_BL_OVERRIDE to high.
BUG=none
BRANCH=nyan
TEST=verified on nyan board 2.0 to see backlight turns on when system
boots up
Change-Id: I04e6052fbef4b17c3f9566c8c5cf691a2710b7b0
Signed-off-by: Yen Lin <yelin@nvidia.com>
Reviewed-on: https://chromium-review.googlesource.com/177553
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Yung-chieh Lo <yjlou@chromium.org>