EG25-G LTE module integration with AM62 2GB

Technical Support
, , , ,
1

Hello,

I am currently working on AM62 SoM 2GB + Dahlia Carrier Board Rev 1.1 with torizoncore OS 6

I am unable to integrate the Quectel EG25-G LTE using the developer documentation.
The modem is still unrecognized.

Can you share relevant information or have a short call to get the modem working?

2

In my company we have working device with EC21. Could you provide lsusb and dmesg output?
LTE modem info should be visible.

You probably need to do following steps:

  1. Check if modem is recognized by lsusb command
  2. Check in dmesg output if the modem is recognized by kernel and appropriate driver is loaded
  • if not:
    You need to enable driver:
    CONFIG_USB_SERIAL_OPTION
    You also need to patch kernel and add your modem model to /drivers/usb/serial/option.c driver and do other minor modifications. see here:
  1. You need ppp package and quectel-ppp scripts
    See this meta-layer:

it consists also patches for linux-yocto and raspberrypi patches. You need similar in your kernel

3

@sagar.gondge

Since you are using Torizon, ideally you won’t need to add the Yocto bits mentioned by @qba. We have ModemManager installed in Torizon and the general working model is to use that without rebuilding from Yocto.

To confirm, you are using the Mini-PCIE variant of the EG25 in the slot on the Dahlia board right? Can you share the output of lsusb?

Drew