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author | Vincent Palatin <vpalatin@chromium.org> | 2016-11-14 17:42:27 +0100 |
---|---|---|
committer | chrome-bot <chrome-bot@chromium.org> | 2016-11-16 07:10:13 -0800 |
commit | 173d77a63d4a58b5f5ec417c9f8b0e879053419d (patch) | |
tree | 270271776ceba5aea25672f615891d7e9ad19dcc /util | |
parent | 75232b40acfd95b0a42ca1ad391d211081b9b36a (diff) | |
download | chrome-ec-173d77a63d4a58b5f5ec417c9f8b0e879053419d.tar.gz |
kevin: keep the pull-up on the USB load switch enable
Keep the pull-up enabled all the time on the GPIO connected to the load
switch enable pin.
This is not ideal but the pull-up bit is no-op in output mode on npcx
and this avoids glitching the enable when transition from the 3A mode
(output strong one) to the 1.5A mode (input with a weak pull-up).
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=gru
BUG=chrome-os-partner:59679
TEST=on Kevin, plug a USB key on port 0, then plug another USB device on
port 1 and see that the key on port 0 is no longer
disconnecting/re-enumerating.
Change-Id: I075dacb1549239f1b60763659dac006f5b838e2c
Reviewed-on: https://chromium-review.googlesource.com/411220
Reviewed-by: Shawn N <shawnn@chromium.org>
Tested-by: David Schneider <dnschneid@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
(cherry picked from commit 16ab6c66c957832c5943f4750dd1970355a697e1)
Reviewed-on: https://chromium-review.googlesource.com/411760
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'util')
0 files changed, 0 insertions, 0 deletions