Limiting Pixel's charging current/voltage on the PPS charger

[matejdro]

I wonder if anyone has figured out how to limit the charging current and/or voltage on the Pixel phones when connected to the PPS charger?

The usual setting /sys/class/power_supply/main-charger/current_max seems to have no effect (PPS charger will just ignore it). There is a promising /sys/class/power_supply/gcpm_pps/current_max, however, that value seemingly cannot be changed (setting it to something else and then reading it will reveal previous value, not the one you set).

My current hack is running the charging cable through the USB C <> USB A <> USB C adapter, which is cumbersome at best and I would prefer just limiting it in the software