Hi, I have a few questions regarding OTG. I found an article on the forum stating that it doesn’t work with custom hardware [image] R17, no eth0 in custom board After upgrading my WP7607 module to R17, it boots normally in mangOH-Green, but when I put it in a custom board (R16.3 use…

see if this patch works for you to apply to yocto source of R17: usb_otg_fix.patch.txt (1.1 KB)

this is regression on R17 Even for USB thumb drive, it would not work with the USB OTG. As workaround, you might need to use R16 or route to USB host connector which is using HSIC bus.

We definitely need the 4.x kernel! We don’t have the option for an HSIC solution. Is there a way to configure the OTG USB to operate exclusively as a host?

Isn’t USB OTG always a host? currently i cannot find any workaround to use USB OTG on R17

We have test build of R17 which is for fixing USB OTG. I have tested with USB thumb drive, it is OK to read it: MOLWP9X07-1373_testbuild_yocto_wp76xx.4k.cwe Google Drive file.

Hello, Could you please provide me with a patch or a diff for the changes you made to enable OTG functionality? We are working on a custom build and would like to test it with these changes. Thank you in advance. Best regards,

we are still testing the patch, we will attach the patch here later In parallel, please test this yocto image at your side

We would be glad to test it, provided that we have a clear understanding of the modifications made in the “swi” package. Unfortunately, the project is currently stalled due to this, and we would like to proceed once it’s resolved.

I have tested the image you provided on our custom device, OTG is functioning, and the Ethernet interface is up and running. I look forward to further information. Thank you!

Thank you for providing the changes! I will report the information after testing.

Based on the results of the first round of tests, it works on our custom build. I’ll mark the comment as a solution if we find anything, I’ll inform you. Thanks for the patch!

Otg issue in R17, host mode does not work

jyijyi October 3, 2023, 7:59am 5

We have test build of R17 which is for fixing USB OTG.
I have tested with USB thumb drive, it is OK to read it:

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No traffic on eth0 Legato Linux distribution (Yocto project)	12	62	September 20, 2024
WP7607 OTG as host Legato Linux distribution (Yocto project)	1	1433	December 19, 2019
Failure to enumerate USB Legato Linux distribution (Yocto project)	3	40	August 26, 2025
MangoH USB Ethernet Adapter Issue on Ubuntu Legato Linux distribution (Yocto project)	3	1156	January 22, 2018
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Otg issue in R17, host mode does not work

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