Letting usb-otg2 suspend increases power consumption
I can consistently see power consumption increased by around 70mW once usb-otg2 (internal USB bus) gets suspended; it goes back to normal after waking it up - which is the exact opposite of what I'd expect (especially since the opposite is what happens with usb-otg1).
Note: we don't enable usb-otg2 suspend by default.
To test (it's best to keep the modem off and SD card unused):
echo auto | sudo tee /sys/devices/platform/soc@0/38200000.usb/xhci-hcd.4.auto/power/control echo auto | sudo tee /sys/devices/platform/soc@0/38200000.usb/power/control