I have cloned openwrt-22.03 and trying making nanopineo seeing attached USB 2.0 EC25 cellular modem device. Turned on all the modules in the Kernel configuration, found this. The only EHCI driver loaded is ehci_fsl. lsusb does not show the device. What am I missing and how to troubleshoot the issue? I can power down and up the modem device on the fly, when I power it up, nothing happens in the dmesg.
does it work in the stock openwrt image ?
and why 22.03 ?
Possibly related?
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I also tried 21.02, same issue. With another operating system (armbian) modem is detected and can get to provide connection to the platform.
Why go backwards instead of forward, version wise ?
Latest version did not compile for this platform at all. With these two compilation succeeded, but this same issue.
Why compile, when there are ready to run images ?
Need full control over the stuff with subsequent addition of custom packages within single image.
So we're back at my 1st reply, does it work with the (23.05) stock image ?
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You are absolutely right, I did not try 
started compiling the image. Will try tomorrow to see the result.
FFS, just download the premade image instead.
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I did it for the image I compile on the Ubuntu machine, then recompiled the target image. Let's see the result tomorrow after booting from the card.
Great thanks both for support. @AndrewZ you gave me a solution.
@frollic image here has the same problem, modem is not detected, and there's no lsusb in the image so it is not suitable for troubleshooting as is without additions.
install it ?
or use https://firmware-selector.openwrt.org/ to generate an image with it preinstalled.
You don't really need lsusb, just run cat /sys/kernel/debug/usb/devices
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