I think there are two ways:
insmod brcmfmac.ko debug=0x6(I'm afraidmodprobedoesn't support passing parameters)echo 6 > /sys/module/brcmfmac/parameters/debug
Check it ![]()
It's an option available in the make menuconfig. Please note it's possible to search, just press / after entering make menuconfig and write symbol name there.