Just to be clear, that feature does greatly speed up charging on devices* that support it, but the PBP does not support it. Even if Linux is negotiating with the adaptor somehow, there's no actual benefit (other than maybe a power supply that needs to be commanded to turn on, such as what might be happening above).
*not in that case, as the current is lower at higher voltages, so no power gain
*not in that case, as the current is lower at higher voltages, so no power gain
:wq
[ SRA accepts you ]
[ SRA accepts you ]