NanoPi Duo OTG works with FriendlyElec image, but not Armbian (SOLVED)

[sgjava]

I just got 4 NanoPi Duos v1.1 and the OTG port functions (unlike v1.0)! This is with the FriendlyElec image. I was wondering should I compare the FriendlyElec's sun8i-h2-plus-nanopi-duo.dtb to the one on Armbian? I already tried messing with Armbian's sun8i-h2-plus-nanopi-duo.dtb by changing usb@01c19000 status = "okay" and adding dr_mode = "host". I'm not sure I can just drop in the dtb? Any way, I'll see what I can figure out. I'm excited the OTG port works now for more than just power since that saves you from buying the Mini Shield if you have a simple project that just needs a USB drive or camera.

[sgjava]

OK, solved this by using FriendlyElec's dtb! Armbian folks may want to use this DTB instead of what's in the current distro. lsusb show thumb drive:

 

Bus 001 Device 002: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive

[martinayotte]

Maybe you can compare both DTs, it is probably just question of VBUS enable which was maybe on the wrong pin.

 

[raschid]

Ideally adding this to the dts should do the trick:

 

&usb_org {

   dr_mode = "host";

   status = "okay";

};

 

Since my Duo is V1.0  I can't test though ...

 

[sgjava]

I tried modifying the existing DTS as described, but it didn't work. I'll do a diff when I have some time.

[sgjava]

There's a lot different in the DTS. I really do not have time to see if it's just certain sections, but I'd just go with the FriendlyElec DTB. The DTS is attached.

sun8i-h2-plus-nanopi-duo-friendlyelec.dts

[raschid]

There's a typo in my code above - it should say &usb_otg, not &usb_org (thick fingers, sorry!):

&usb_otg {
    dr_mode = "host";
    status = "okay";
};

Did you catch that? If not, maybe give at another go with the above modification.

This tag corresponds to the following part of the friendlyelec "all-in-one" dts:

		usb@01c19000 {
			compatible = "allwinner,sun8i-h3-musb";
			reg = <0x1c19000 0x400>;
			clocks = <0x4 0x20>;
			resets = <0x4 0x11>;
			interrupts = <0x0 0x47 0x4>;
			interrupt-names = "mc";
			phys = <0x1c 0x0>;
			phy-names = "usb";
			extcon = <0x1c 0x0>;
			status = "okay";
			dr_mode = "otg";
		};

Based on that I would try exchanging "host" for "otg" in the dr_mode tag.