wifi not working imx8m-mini evk on custom yocto-linux

[vivek338]

Hi !

I am working on imx8m-mini evk board, wifi is not working. No wlan0 device found error. Please find below commands output.

root@imx8mmevk:~# ifconfig
eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:04:9f:06:41:cc txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

root@imx8mmevk:~# ifup wlan0
Successfully initialized wpa_supplicant
rfkill: Cannot get wiphy information
Could not read interface wlan0 flags: No such device
WEXT: Could not set interface 'wlan0' UP
wlan0: Failed to initialize driver interface
wlan0: CTRL-EVENT-DSCP-POLICY clear_all
Cannot find device "wlan0"

Please help !!!!!!!!!!!

Thanks in advance !!!!!!!!!!

[vivek338 · Accepted solution]

Hi

Issue resolved as I am using older board of IMX8MMINI and I found answer in another forum that the older versions are using Qualcomm wifi chip i.e. QCA9377 and the supported linux version is L5.4.24 . But my question is, is that ok to use older version of linux for further development? if not then how I can install QCA9377 driver in latest linux version.

[Harvey021]

Hi @vivek338 

Please refer to the document for imx8m-mini evk (How to Integrate 88W8997 to iMX8MM-EVK & L5.4.24_2... - NXP Community)

Best regards

Harvey

[vivek338]

Thanks for reply !
The document you shared explains integration of 88W8997 external wifi card but imx8mmini have built in wifi chip 88W8987 which is not working.

Please help !

[Harvey021]

You can use modprobe to load driver and firmware then use wifi. Images from Yocto and Prebuild both should include them in it.

Best regards

Harvey

[vivek338]

Hi !
Please view below outputs, still wifi not working.

root@imx8mmevk:~# modprobe moal mod_para=nxp/wifi_mod_para.conf

[ 900.979713] wlan: Loading MWLAN driver
[ 900.984431] wlan: Register to Bus Driver...
[ 900.988786] wlan: Register to Bus Driver Done
[ 900.993199] wlan: Driver loaded successfully


root@imx8mmevk:~# ifconfig -a
eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:04:9f:06:41:cc txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 816 bytes 52012 (50.7 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 816 bytes 52012 (50.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

[Harvey021]

From the log, there seem no wifi related drivers and firmware loaded from your current image. 

You can try the document that I shared with you or try our prebuild (Embedded Linux for i.MX Applications Processors | NXP Semiconductors) or build it by yocto.

Best regards

Harvey

[vivek338]

Hi !
I tried imx-image-full but still wifi not working, please help !