WiFi USB dongle for STM32MP2

[GLut_]

Hello,

I’m trying to add Wi-Fi support to my STM32MP257F-EV1board. I’m using Panda Wireless PAU0A Wi-Fi USB dongle, it uses MT7610U chipset. I have followed example of Modifying kernel configuration in How to cross-compile with the Distribution Package. In fact, the example uses Realtek RTL192CU chipset, I’m using MediaTek MT76x0U in configuration, that’s the only difference.

I updated the kernel image on board. However, when I plug in the dongle I get the error:

It looks like all necessary modules are present:

I tried to restart the module, same result:

I checked, this Wi-Fi dongle works with Ubuntu 22.04 and Raspbian.

Please, advise, what I’m doing wrong.

[PatrickF]

Hi @GLut_ 

altough quite old and related to another MPU, this post could help.
https://community.st.com/t5/stm32-mpus/how-to-use-edimax-ew-7811un-v2-wifi-dongle-on-stm32mp157a-dk1/ta-p/49790

Maybe you simply miss to get the relevant xxxx.bin in right location

Regards.

[GLut_]

Thank you, @PatrickF for your reply. 

Indeed, I'm missing mt7610e.bin and mt7610u.bin, but where do I get them? I've followed the instructions in example of Modifying kernel configuration in How to cross-compile with the Distribution Package, and as a result I got a new kernel image and relevant library files. No xxxxxx.bin files were created (or I couldn't find them), and nothing was mentioned about xxxx.bin files. How to get these files short of copying them from another system? 

Actually, I created folder /lib/firmware/mediatek and copied mt7610e.bin and mt7610u.bin from RaspberryPi I have. After that I was able to load the driver and bring-up WiFi interface. It worked, but it does not feel like a proper way to do.

[Erwan SZYMANSKI]

Hello @GLut_ ,
What you ask now is a proper way to install directly your binary firmwares on the final Image generated by Yocto, without having to copy it by yourself on the fly.

In fact, this is a pure Yocto consideration : How to install something somewhere in your file system.

You can create your own Yocto layer / recipe to create the new folder in /lib/firmware, then install your binaries.

In theory, the recipes that aims to install this kind of files is "linux-firmware". On ST side, we overwrite it in https://github.com/STMicroelectronics/meta-st-stm32mp/tree/mickledore/recipes-kernel/linux-firmware with some bbappend files.

You can get inspired by this. Otherwise, you can check how to create a recipe taken into consideration for your Yocto image, that create a directory and install files inside.

Kind regards,
Erwan.