I have recently been trying to get into some Android development, (now devolved into debugging my phone’s adbd issues), which means I have my phone plugged into my laptop alot. In doing so, it charges the phone at ~10W. Combined with my normal usage, this drinks a constant 25-30W (peak 37) (according to battop).
I only have 25W/30W chargers for my phone and laptop–which usually suffices, but now with my phone plugged in, it can’t make up the difference anymore (discharging ~10W).
Is it possible to limit the output PD current (on an AMD board)?
I don’t think it’s a USB PD matter. The mainboards don’t do USB PD out.
10W is just standard 5v @ 2A.
If you’re doing Android development, you have root, right? You can control charge current on a lot of devices as long as you have root. I think it’s been standardized / built into android on newer android versions? And might not need root with that. But I don’t recall exactly. The still working old root way is with Advanced Charging Controller (AccA) or Battery Charge Limiter (BCL)
I do believe there are repositories or branches for the EC firmware corresponding to all the mainboards, as I recall someone recently listing them. Unfortunately, iirc, it’s not immediately clear which goes with which, due to using the codenames.