Bien, tras ejecutar la detección automática del wifi con los comandos que has citado, que ya hice en su día, pero no con tu backport, sigue sin dar resultado.
DMESG
Linux version 2.6.32.27 (jar@jar-virtual-machine) (gcc version 4.3.3 (GCC) ) #1 Thu Feb 14 10:59:34 CET 2013
Detected Broadcom 0x6358 CPU revision a1
CPU frequency is 300 MHz
64MB of RAM installed
registering 40 GPIOs
board_bcm963xx: CFE version: 100.48.56-49.46
bootconsole [early0] enabled
CPU revision is: 0002a010 (Broadcom BCM6358)
board_bcm963xx: board name: HW556
Determined physical RAM map:
memory: 04000000 @ 00000000 (usable)
Initrd not found or empty - disabling initrd
Zone PFN ranges:
Normal 0x00000000 -> 0x00004000
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
0: 0x00000000 -> 0x00004000
On node 0 totalpages: 16384
free_area_init_node: node 0, pgdat 802783e0, node_mem_map 81000000
Normal zone: 128 pages used for memmap
Normal zone: 0 pages reserved
Normal zone: 16256 pages, LIFO batch:3
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
Kernel command line: root=/dev/mtdblock2 rootfstype=squashfs,jffs2 noinitrd console=ttyS0,115200
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Primary instruction cache 16kB, VIPT, 2-way, linesize 16 bytes.
Primary data cache 16kB, 2-way, VIPT, cache aliases, linesize 16 bytes
Memory: 62076k/65536k available (2097k kernel code, 3384k reserved, 369k data, 132k init, 0k highmem)
Hierarchical RCU implementation.
NR_IRQS:128
Calibrating delay loop... 299.00 BogoMIPS (lpj=598016)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
cal_data0 = 0xffff ≠ 0xa55a, switching athdata address to 0x1EF7E000
changed ath9k regdomain to 0xff
registering PCI controller with io_map_base unset
bio: create slab <bio-0> at 0
pci 0000:00:01.0: invalid calibration data
pci 0000:00:01.0: reg 10 32bit mmio: [0x000000-0x00ffff]
Switching to clocksource MIPS
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
NET: Registered protocol family 1
audit: initializing netlink socket (disabled)
type=2000 audit(0.207:1): initialized
squashfs: version 4.0 (2009/01/31) Phillip Lougher
Registering mini_fo version $Id$
JFFS2 version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
msgmni has been set to 121
io scheduler noop registered
io scheduler deadline registered (default)
gpiodev: gpio device registered with major 254
gpiodev: gpio platform device registered with access mask FFFFFFFF
bcm63xx_uart.0: ttyS0 at MMIO 0xfffe0100 (irq = 10) is a bcm63xx_uart
console [ttyS0] enabled, bootconsole disabled
bcm963xx_flash: 0x02000000 at 0x1e000000
bcm963xx: Found 1 x16 devices at 0x0 in 16-bit bank
bcm963xx: Found an alias at 0x1000000 for the chip at 0x0
CFI mfr 0x00000001
CFI id 0x00002101
Amd/Fujitsu Extended Query Table at 0x0040
Amd/Fujitsu Extended Query version 1.3.
bcm963xx: CFI does not contain boot bank location. Assuming top.
number of CFI chips: 1
bcm963xx_flash: Read Signature value of CFE1CFE1
bcm963xx_flash: CFE bootloader detected
bcm963xx_flash: CFE boot tag found with version 8 and board type HW556
bcm963xx_flash: Partition 0 is CFE offset 0 and length 20000
bcm963xx_flash: Partition 1 is kernel offset 20100 and length dff00
bcm963xx_flash: Partition 2 is rootfs offset 100000 and length d00000
bcm963xx_flash: Partition 3 is ath_data offset e00000 and length 1e0000
bcm963xx_flash: Partition 4 is nvram offset fe0000 and length 20000
bcm963xx_flash: Partition 5 is linux offset 20000 and length de0000
bcm963xx_flash: Spare partition is 5c0000 offset and length 840000
Creating 6 MTD partitions on "bcm963xx":
0x000000000000-0x000000020000 : "CFE"
0x000000020100-0x000000100000 : "kernel"
mtd: partition "kernel" must either start or end on erase block boundary or be smaller than an erase block -- forcing read-only
0x000000100000-0x000000e00000 : "rootfs"
mtd: partition "rootfs" set to be root filesystem
mtd: partition "rootfs_data" created automatically, ofs=5C0000, len=840000
0x0000005c0000-0x000000e00000 : "rootfs_data"
0x000000e00000-0x000000fe0000 : "ath_data"
0x000000fe0000-0x000001000000 : "nvram"
0x000000020000-0x000000e00000 : "linux"
bcm63xx_wdt started, timer margin: 30 sec
Registered led device: message
Registered led device: hspa
Registered led device: dsl
Registered led device: power
Registered led device: all_leds
TCP westwood registered
NET: Registered protocol family 17
802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com>
All bugs added by David S. Miller <davem@redhat.com>
VFS: Mounted root (squashfs filesystem) readonly on device 31:2.
Freeing unused kernel memory: 132k freed
Please be patient, while OpenWrt loads ...
mini_fo: using base directory: /
mini_fo: using storage directory: /overlay
eth0: link forced UP - 100/full - flow control off/off
device eth0.0 entered promiscuous mode
device eth0 entered promiscuous mode
br-lan: port 1(eth0.0) entering forwarding state
Compat-wireless backport release: compat-wireless-2011-11-29
Backport based on wireless-testing.git master-2011-12-01
cfg80211: Calling CRDA to update world regulatory domain
SCSI subsystem initialized
roboswitch: Probing device eth0: found a 5325! It's a 5350.
There is already a switch registered on the device 'eth0'
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
cfg80211: World regulatory domain updated:
cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
PPP generic driver version 2.4.2
ip_tables: (C) 2000-2006 Netfilter Core Team
NET: Registered protocol family 24
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
bcm63xx_ehci bcm63xx_ehci.0: BCM63XX integrated EHCI controller
bcm63xx_ehci bcm63xx_ehci.0: new USB bus registered, assigned bus number 1
bcm63xx_ehci bcm63xx_ehci.0: irq 18, io mem 0xfffe1300
bcm63xx_ehci bcm63xx_ehci.0: USB 2.0 started, EHCI 1.00
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
nf_conntrack version 0.5.0 (973 buckets, 3892 max)
usb 1-1: new high speed USB device using bcm63xx_ehci and address 2
usb 1-1: configuration #1 chosen from 1 choice
hub 1-1:1.0: USB hub found
hub 1-1:1.0: 2 ports detected
ath_hal: module license 'Proprietary' taints kernel.
Disabling lock debugging due to kernel taint
ath_hal: 2009-05-08 (AR5210, AR5211, AR5212, AR5416, RF5111, RF5112, RF2413, RF5413, RF2133, RF2425, REGOPS_FUNC, XR)
ath_pci: trunk
wlan: trunk
wlan: mac acl policy registered
ath_rate_minstrel: Minstrel automatic rate control algorithm 1.2 (trunk)
ath_rate_minstrel: look around rate set to 10%
ath_rate_minstrel: EWMA rolloff level set to 75%
ath_rate_minstrel: max segment size in the mrr set to 6000 us
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
bcm63xx_ohci bcm63xx_ohci.0: BCM63XX integrated OHCI controller
bcm63xx_ohci bcm63xx_ohci.0: new USB bus registered, assigned bus number 2
bcm63xx_ohci bcm63xx_ohci.0: irq 13, io mem 0xfffe1400
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
uhci_hcd: USB Universal Host Controller Interface driver
usbcore: registered new interface driver usblp
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usbcore: registered new interface driver ums-alauda
usbcore: registered new interface driver ums-cypress
usbcore: registered new interface driver ums-datafab
usbcore: registered new interface driver ums-freecom
usbcore: registered new interface driver ums-isd200
usbcore: registered new interface driver ums-jumpshot
usbcore: registered new interface driver ums-karma
usbcore: registered new interface driver ums-sddr09
usbcore: registered new interface driver ums-sddr55
usbcore: registered new interface driver ums-usbat
fuse init (API version 7.13)