When the USB2.0 port is used in device mode, having the D+/D- lines
connected just before resetting the PI3USB9281 (for the 2nd detection
used a BC1.2 debouncing) triggers a misdetection where DCP chargers are
seen as Apple 2.4A chargers.
To avoid this, disconnect the D+/D- lines and let them relax before
triggering the PI3USB9281 reset.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=smaug
BUG=chrome-os-partner:42048
TEST=connect and disconnect a DCP charger to the Smaug type-C port
with the AP running, see it constantly detected as DCP and no Pericom
interrupt storm.
Change-Id: I8f6043439c2c6b52f2689b4947baffe51f62eba8
Reviewed-on: https://chromium-review.googlesource.com/282594
Reviewed-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Trybot-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>