We have tested the following fix on the Embedded controller:
Which will get into our next bios release.
What we were seeing is that low wattage 20V chargers will advertise PD 2.0 currents using resistor sensing of 3A. Eg 5V3A.
However when we negociate up to 20V, we need to reduce the input current limit on our charger to not go over the 20V current limit, eg 20V, 2A.
So when the charger voltage ramps up, the current would stay at 3A, and trip OCP on the charger.
Now when we transition to 20V, we will limit the input current on our charger.