WIFI & BT on IMX8MM-LPDDR4

[Chandrasekhar1]

Need steps to validate the WIFI & BT on IMX8MM-LPDDR4 evk.
Are we need to load any dtb files at the time of booting?
We tried with the IMX8 default images (https://www.nxp.com/webapp/Download?colCode=L5.15.71_2.2.1_MX8MM&appType=license) but WIFI interface itself is not coming.

As there are multiple varients of SOM board so including the SOM board for reference.

[Dhruvit]

Hi @Chandrasekhar1 

I hope you are doing well.

Please make sure to check the driver for wifi is loaded successfully or not, for that please run the below command on your terminal.
dmesg | grep "driver loaded"

Please make sure to check whether the interface is created after that or not by running the below-given command.
dmesg | grep interface

If driver loaded successfully & interface is created then please run the below command
ifconfig mlan0 192.168.1.1 netmask 255.255.255.0 up

then check for the same
ifconfig mlan0

For BT Please follow the below steps

first, load the driver and then run these two steps.
./fw_loader_linux /dev/ttyUSBx 115200 0 helper_uart_3000000.bin
hciattach /dev/ttyUSBx any 3000000 flow

One can find the fw_loader_linux and helper_uart files from the driver packages themselves.

It will help you!

Thanks & Regards,
Dhruvit Vasavada

[Chandrasekhar1]

hi @Dhruvit ,

Thanks for your response.
I tried on the evk with the default imx-image-full images also, but the interface itself is not coming up.
Feels like I'm missing something.
Here are the boot logs and images used for the imx8mm-lpddr4 evk.
Please look into the logs once and let me know if any procedure mistakes, I'm doing

[Dhruvit]

Hi @Chandrasekhar1,

I hope you are doing well.

Thanks for the logs, I checked it.
From the logs, it is seen that drivers are loaded successfully but firmware wasn't and that is the reason why the interface is not getting up.
Please insert a wifi chipset at the PCIe interface, and then check whether the firmware is getting loaded or not.

for more details regarding the wifi please refer to the below link.
https://www.nxp.com/products/wireless/wi-fi-plus-bluetooth-plus-802-15-4:WIFI-BLUETOOTH

Thanks & Regards,
Dhruvit Vasavada

[Chandrasekhar1]

Hi @Dhruvit ,

in the som board already wifi & BT in built right. So I just want to test that, so please confirm me once if my understanding is correct.

SOM board image with revision details are attached previously. 

Regards,
Chandrasekhar

[Dhruvit]

Hi @Chandrasekhar1,

I hope you are doing well.

"in the som board already wifi & BT are inbuilt right."
->Yes, In EVK it is available.

Thanks & Regards,
Dhruvit Vasavada