Tweak for charging through USB3 ?
#2
(11-12-2020, 11:10 AM)cafe Wrote: Hi all,

I received my Pinephone a few days ago, installed mobian on it, and noticed I could not get the battery to fully charge while plugged to a USB3 port.
"Power supply" was showing me "Current limit : 0.5A", although I know an USB3 port can deliver much more.

So I went looking for a solution and ended up simply tweaking this current_limit by putting
Code:
3000000
into
Code:
/sys/class/power_supply/axp20x-usb/input_current_limit

After that, yeepee! my phone is now charging a lot faster and finally approaching 100%.

But the thing is, I really don't know what I am doing there, and since I found a lot of posts about charging issues, I can't believe the solution is that simple.

So is it safe to change this input_current_limit ? Can I put that into a udev rule and consider the problem solved ? (i.e. : I can finally charge my phone simply by plugging it to my USB3 port) or do you guys see anything that can go wrong setting this input_current_limit manually ?

I have no idea if what you did was safe. I did check my numbers though:
in /sys/class/power_supply/axp20x-usb/input_current_limit    it is set at 500000; in voltage_min it's 4000000; in current_max it's 1500000

When i use a pd charger (with USB type c to type c) I usually get 1.5A, but if i forget, and have the charger plugged in while I did a reboot, it has been known to either stop charging, or charging at 0.5A.  At this point I would unplug. reboot. re-plug. and it's back to 1.5 A.  

Once upon a time, after one of the updates, I did see in the app Powersupply that it was charging at 3. something A. But that was the only time, and it never went back to that number.


Messages In This Thread
Tweak for charging through USB3 ? - by cafe - 11-12-2020, 11:10 AM
RE: Tweak for charging through USB3 ? - by HLing - 11-12-2020, 01:53 PM
RE: Tweak for charging through USB3 ? - by cafe - 11-13-2020, 05:22 AM

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