brcmfmac ok but wlan0 not found - Raspberry Pi Forums

hello,
i'm trying buildroot image rpi3.
modprobed brcmfmac driver think have firmware installed:

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# lsmod | grep brcmfmac brcmfmac              175175  0  brcmutil                5585  1 brcmfmac cfg80211              416114  1 brcmfmac 

defined wlan0 in /etc/network/interface:

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auto wlan0 	iface wlan0 inet dhcp 	pre-up wpa_supplicant -b w -d wext -i wlan0 -c /etc/wpa_supplicant.conf 	post-down killall -q wpa_supplicant 

when try ifup wlan0 get:

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# ifup wlan0 initialized wpa_supplicant not read interface wlan0 flags: no such device wext: not set interface 'wlan0' wlan0: failed initialize driver interface 

missing?

_mark_ wrote:

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auto wlan0 	iface wlan0 inet dhcp 	pre-up wpa_supplicant -b w -d wext -i wlan0 -c /etc/wpa_supplicant.conf 	post-down killall -q wpa_supplicant 

try with:

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pre-up wpa_supplicant -b -dnl80211,wext -i wlan0 -c /etc/wpa_supplicant.conf 

raspberrypi