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The USART peripheral in the L and F families is different enough to need
different receive drivers. In particular, the L family USART perihperal
has no way of disabling the overflow error bit. So for that family we
check and clear the bit, and keep a count of overflows.
Signed-off-by: Anton Staaf <robotboy@chromium.org>
BRANCH=None
BUG=None
TEST=make buildall -j
Change-Id: Iea26c242d5177afd552a3bd4d6ab1a9c7a65f90e
Reviewed-on: https://chromium-review.googlesource.com/288978
Trybot-Ready: Anton Staaf <robotboy@chromium.org>
Tested-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>
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