On Thu, 16 Sep 2021 14:09:38 -0500, Chris Morgan wrote:

When writing a battery driver, I noticed that the USB voltage was ~3.7V
while running off of battery on a mainline kernel. After consulting the
schematics for the Odroid Go Advance, it appears that the BOOST
regulator is involved in the process of powering the USB host. Power
for the USB host goes from the vccsys regulator into the PMIC, then out
from the PMIC BOOST regulator into the FC9516A (which is controlled by
GPIO), which then feeds power into the USB host. I named the regulator
usb_midu because on the datasheet the pin is described as "MIDU/BOOST -
middle point of USB power supply / boost output". Making these changes
solved the USB power issue on battery and I'm now reading approximately
5v.

[...]

Applied, thanks!

[1/1] arm64: dts: rockchip: Correct regulator for USB host
      commit: 4b90e34d9a3ba25a62e4ea42d63fbe6c7fb11ed1

Best regards,
-- 
Heiko Stuebner [off-list ref]