I'll give the TL;DR version:
1. sudo apt update && sudo apt upgrade
2. sudo armbian-config
3. Scroll to "system" then "Dtc" (as per attached image)
4. search for: "usb@1c19000" (use ctrl+w for speed)
5. change dr_mode to "host and status to "okay" as below
usb@1c19000 {
compatible = "allwinner,sun8i-h3-musb";
reg = < 0x1c19000 0x400 >;
clocks = < 0x03 0x20 >;
resets = < 0x03 0x11 >;
interrupts = < 0x00 0x47 0x04 >;
interrupt-names = "mc";
phys = < 0x0e 0x00 >;
phy-names = "usb";
extcon = < 0x0e 0x00 >;
dr_mode = "host";
status = "okay";
phandle = < 0x47 >;
};
6. search for "usb0-vbus"
7. Change gpio to < 0x00 0x02 0x00 >; as below
usb0-vbus {
compatible = "regulator-fixed";
regulator-name = "usb0-vbus";
regulator-min-microvolt = < 0x4c4b40 >;
regulator-max-microvolt = < 0x4c4b40 >;
enable-active-high;
gpio = < 0x00 0x02 0x00 >;
status = "okay";
phandle = < 0x0f >;
};
8. Save, exit and recompile
9. run lsusb and the otg device will not be listed
10. echo "354" | sudo tee /sys/class/gpio/export #makes pin PL2 controllable
11. echo "out" | sudo tee /sys/class/gpio/gpio354/direction #sets pin as an output
12. echo "1" | sudo tee /sys/class/gpio/gpio354/value #turns on the usb
13. run lsusb and otg device should be listed .
14. echo "0" | sudo tee /sys/class/gpio/gpio354/value #turns off the usb
15. you will need to run steps 10 and 11 each time the OPi one boots.
