root@bpzm2lan:~# iw reg get
global
country BG: DFS-ETSI
        (2402 - 2482 @ 40), (N/A, 20), (N/A)
        (5170 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW
        (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW
        (5490 - 5710 @ 160), (N/A, 27), (0 ms), DFS
        (5725 - 5875 @ 80), (N/A, 14), (N/A)
        (57000 - 66000 @ 2160), (N/A, 40), (N/A), NO-OUTDOOR

When AP is set to chanels 1-11 there is no problem conectin BPi to it. Chanels 12 nad 13 are invisible for the BPi. Other devices are conecting without a problem when AP is set to 12 or 13.

root@bpzm2lan:~# cat /etc/armbian-release 
# PLEASE DO NOT EDIT THIS FILE
BOARD=bananapim2zero
BOARD_NAME="Banana Pi M2 Zero"
BOARDFAMILY=sun8i
BUILD_REPOSITORY_URL=https://github.com/armbian/build
BUILD_REPOSITORY_COMMIT=428a20876-dirty
DISTRIBUTION_CODENAME=buster
DISTRIBUTION_STATUS=supported
VERSION=21.05.6
LINUXFAMILY=sunxi
ARCH=arm
IMAGE_TYPE=stable
BOARD_TYPE=csc
INITRD_ARCH=arm
KERNEL_IMAGE_TYPE=Image
BRANCH=current

 

http://ix.io/3sU8

Quote

[ 6.773191] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-11), device may have limited channels available

May be true.

Missed that, thanks.

https://patchwork.kernel.org/project/linux-wireless/patch/20190107113401.6824-1-hdegoede@redhat.com/

look in your /lib/firmware/brcm directory 

 

root@bananapim2zero:/lib/firmware/brcm# ls brcmfmac43430*
 brcmfmac43430a0-sdio.bin                      brcmfmac43430-sdio.Hampoo-D2D3_Vi8A1.txt
 brcmfmac43430a0-sdio.ilife-S806.txt           brcmfmac43430-sdio.MUR1DX.txt
 brcmfmac43430a0-sdio.jumper-ezpad-mini3.txt   brcmfmac43430-sdio.raspberrypi,3-model-b.txt
'brcmfmac43430a0-sdio.ONDA-V80 PLUS.txt'       brcmfmac43430-sdio.sinovoip,bpi-m2-zero.bin
 brcmfmac43430a0-sdio.txt                      brcmfmac43430-sdio.sinovoip,bpi-m2-zero.txt
 brcmfmac43430-sdio.AP6212.txt                 brcmfmac43430-sdio.txt
 brcmfmac43430-sdio.bin

 

Edit your corresponding driver .txt file (that can be brcmfmac43430-sdio.sinovoip,bpi-m2-zero.txt or brcmfmac43430-sdio.txt)

change the file with your texteditor :

ccode=ALL  TO  ccode=XY

save the file an reboot your system !

you should now CHANNEL 12-13 be available here in EU  🙂 ...

 

refer also this link :

https://patchwork.kernel.org/project/linux-wireless/patch/20181010092719.368-1-hdegoede@redhat.com/

 

🙂

Edited June 10, 20224 yr by feedzapper