Files
OpenCellular/include
Mulin Chao e7969f8245 npcx: keyboard: Add quasi-bidirectional buffers support on npcx7 ec.
This CL added the support for the quasi-bidirectional buffer which has
an open-drain output and a low-impedance pull-up resistance on KSO pins.
The low-impedance pull-up is active when ec changes the output data
buffers from 0 to 1, thereby reducing the low-to-high transition time.
Add CONFIG_KEYBOARD_KSO_HIGH_DRIVE to enable/disable this feature for
npcx7 series ec.

BRANCH=none
BUG=none
TEST=No build errors for all boards using npcx5 series.
     Build poppy board and upload FW to platform. No issues found.

Change-Id: I138f0e433394816e1e5c58b5053580f202c1ac48
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
Reviewed-on: https://chromium-review.googlesource.com/497189
Reviewed-by: Randall Spangler <rspangler@chromium.org>
2017-05-06 14:20:15 -07:00
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