Hi, I am working on imx93 board and i have a GSM module of sierra em9291, which is connected to the obu board using M.2 slot. The device is expected to be detected as a USB device, but the module is not getting detected. It is confirmed that the module is working. I am attaching the dmesg received …

you can see here: [image] Problems Getting EM9191 Working with M.2 to USB Adapters Development tools See if this helps: For your m.2 adaptor: you need to check these pins for connecting with USB: pin 20 → high (1.8V), pin 22 → high (1.8V)

Thank you for your insights.However pin 20 and 22 of the m.2 port is already connected to high(1.8V)

Can it be connected to windows pc?

The module is working on windows , however it is not getting enumerated on the OBU board which runs imx93 image.

See if this helps [image] EM9293 enumerates on USB bus in linux, but no new devices Hello, I am working on a custom embedded linux solution, with a down-device Sierra Wireless EM9293 cellular modem on the carrier board. My linux kernel sees the modem on the…

Hello , [Screenshot from 2026-01-30 17-47-46] I added the support for sierra em929x in my qcserial.c and qmi_wwan.c. Now this is the dmesg which i get. I am also attaching the driver files which i got from sierra official website. [ 0.412001] usbcore: registered new interface driver usbfs [ 0.4…

Seems there is hardware issue on your board, i cannot even see the detection …

Sierra EM9291 module not enumerating as a usb device on imx93

jyijyi January 29, 2026, 1:41pm 6

See if this helps

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Sierra EM9291 module not enumerating as a usb device on imx93

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