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The Over Voltage Protection was de-activated when the output is disabled to avoid false positive when doing a down voltage transition, but as a side effect, we might reset the OVP while the fault is still present since the OVP first disables the output. So, we want to keep testing the OVP fault condition if there is a pre-existing fault. Also add a hysteris and ensure we recover from OVP only when we go under the new threshold. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=chrome-os-partner:28331 TEST=trigger an OVP using a voltage source and see the output is not re-enabled until we shutdown the voltage source. Change-Id: Idef3f630c3cfeb301e62f1e75c2a424b56bc98dd Reviewed-on: https://chromium-review.googlesource.com/206185 Reviewed-by: Alec Berg <alecaberg@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org> Commit-Queue: Vincent Palatin <vpalatin@chromium.org>