RM502Q-AE Linux Drivers

Table 1. Applicable Modules and USB Interface Information from UMTS_LTE_5G Linux USB Driver User Guide V3.0 implies that the only driver required for the RM500Q series is the MBIM driver. Is this correct or have I misinterpreted the table and the USB serial option driver is also required?

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Also for testing the MBIM driver it says details can be provided?

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  1. the USB serial option driver is also required.
  2. For the use of the MBIM network card driver, you can refer to the use of qmi driver.

Hi Isaac,

I’m trying to integrate this module to a Raspberry Pi. Have managed to get qmi_wwan_q driver ver 1.2.1 installed (verified using lsusb -t).
But when I run sudo ./quectel-CM -s “myapn”, wwan0 failed to get dhcp IP Address.
Tried to google search, found that need to set wwan to raw IP.

sudo echo ‘Y’ | sudo tee /sys/class/net/wwan0/qmi/raw_ip

But the thing is, there is no such file (/sys/class/net/wwan0/qmi/raw_ip) in my system.

BTW, my system is Raspberry Pi 4, with Raspi OS 64 Bit kernel 5.15.32.

Really need some enlightenment on this issue.

Thank you.

Is your network card name wwan0? you try to create /sys/class/net/wwan0/qmi/raw_ip file try.

Hi…

Finally got it working by new install of Raspi OS Buster with 5.10 Kernel.
Does not work on Raspi OS Bullseye with 5.15 kernel.

Manually create raw_ip file have no effect.

Thanks.