BCM4312 802.11b/g LP-PHY' firmware problem

[Orka Edison]

hi,

i have added a BCM4312 on my Dell Precision M4700 under WWAN port.

i try to do working it, but some else not working correctly...

=> my pciconf -lv : 

	siba_bwn0 at pci0:2:0:0:	class=0x028000 card=0x04b514e4
	chip=0x431514e4 rev=0x01 hdr=0x00 vendor     = 'Broadcom
	Corporation' device     = 'BCM4312 802.11b/g LP-PHY'
    	class      = network

=> my loader.conf :

	kern.geom.label.disk_ident.enable="0"
	kern.geom.label.gptid.enable="0"
	zfs_load="YES"

	#### for nvidia driver ####
	nvidia_load="YES"
	linux_load="YES"
	###########################

	#### for bcm Wifi ####

	if_bwn_load="YES"
	bwn_v4_lp_ucode_load="YES"
	hw.bwn.usedma=0


	#if_bwi_load="YES"

	ndis_load="YES"
	wlan_load="YES"
	#wlan_wep_load="YES"
	wlan_ccmp_load="YES"
	wlan_tkip_load="YES"
	wlan_wmrr_load="YES"
	firmware_load="YES"

	#wlan_xauth_load="YES"

	###########################

=> my rc.conf :

	clear_tmp_enable="YES"
	syslogd_flags="-ss"
	sendmail_enable="NONE"
	hostname="DellPrecision"
	keymap="fr.iso.kbd"
	#ifconfig_em0="DHCP"
	#ifconfig_em0="DHCP"
	#ifconfig_em0_ipv6="inet6 accept_rtadv"
	moused_enable="YES"
	ntpd_enable="YES"
	powerd_enable="YES"
	# Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable
	dumpdev="AUTO"
	zfs_enable="YES"

	#### enable gnome3 #####

	#dbus_enable="YES"
	#hald_enable="YES"

	gdm_enable="YES"

	gnome_enable="YES"

	#########################

	#### enable pf ####

	#pf_enable="YES"
	#pf_rules="/etc/pf.conf"
	#pflog_enable="YES"

	###################

	#### enable WiFi #####

	wlans_bwn0="wlan0"
	ifconfig_wlan0="PSK DHCP"

=> the dmesg error log : 

	bwn0: ucode fw: ucode15
	bwn0: firmware version (rev 478 patch 104 date 0x8701 time
	0x657) bwn0: ucode fw: ucode15
	bwn0: firmware version (rev 478 patch 104 date 0x8701 time
	0x657) bwn0: incorrect CCK rate 61
	bwn0: bwn_rxeof: dropped
	bwn0: incorrect CCK rate 145
	bwn0: bwn_rxeof: dropped
	bwn0: incorrect CCK rate 145
	bwn0: bwn_rxeof: dropped
	bwn0: ucode fw: ucode15
	bwn0: firmware version (rev 478 patch 104 date 0x8701 time
	0x657) bwn0: ucode fw: ucode15
	bwn0: firmware version (rev 478 patch 104 date 0x8701 time
	0x657) bwn0: incorrect CCK rate 61
	bwn0: bwn_rxeof: dropped
	bwn0: incorrect CCK rate 145
	bwn0: bwn_rxeof: dropped
	bwn0: incorrect CCK rate 145
	bwn0: bwn_rxeof: dropped
	bwn0: incorrect CCK rate 61
	bwn0: bwn_rxeof: dropped
	bwn0: incorrect CCK rate 145
	bwn0: bwn_rxeof: dropped
	bwn0: incorrect CCK rate 145
	bwn0: bwn_rxeof: dropped
	bwn0: incorrect CCK rate 61
	bwn0: bwn_rxeof: dropped
	bwn0: incorrect CCK rate 145
	bwn0: bwn_rxeof: dropped

=> my uname -a : 

	FreeBSD DellPrecision 11.0-RELEASE-p1 FreeBSD 11.0-RELEASE-p1 #0 r306420: Thu Sep 29 01:43:23 UTC 2016     root at releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64


===================================================================================================


i use a wpa_supplicant.conf but can't enable wifi. the LED stay off

=> my ifconfig :

	em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>
	ether f0:1f:af:19:f8:c6
	inet 192.168.1.68 netmask 0xffffff00 broadcast 192.168.1.255 
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
	media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
	options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
	inet6 ::1 prefixlen 128 
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 
	inet 127.0.0.1 netmask 0xff000000 
	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
	groups: lo 
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	ether 00:23:4d:4e:66:6b
	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
	media: IEEE 802.11 Wireless Ethernet autoselect (autoselect)
	status: no carrier
	ssid "" channel 7 (2442 MHz 11g)
	regdomain FCC country US authmode OPEN privacy OFF txpower 30 bmiss 7
	scanvalid 60 protmode CTS wme bintval 0
	groups: wlan 

=======================================================================================================

can you help me for to do working this card, because the default wifi
card are not reconnized by FreeBSD.

best regard,
Orka.