Re: Problem with the wifi

[Arend van Spriel <arend.vanspriel@broadcom.com>]

On 09-08-17 18:40, Larry Finger wrote:
> On 08/08/2017 04:10 AM, Arend van Spriel wrote:
>> + linux-wireless
>> + Larry
>>
>> please keep linux-wireless in this thread.
>>
>> On 08-08-17 08:21, Paolo Bettini wrote:
>>> Arend van Spriel ha scritto:
>>>> + linux-wireless On 07-08-17 21:38, Paolo Bettini wrote:
>>>>> Hi , i am Paolo and i installed Debian stretch on my ezbook2 . One
>>>>> problem is the wifi , the card a SDIO device , seems to be 02d0:a9a6
>>>>> linux id or Broadcom AP6212 for windows....i installed deb package
>>>>> firmware-brcm80211 and nvram sdio txt in /lib/firmware/brcm, reloaded
>>>>> bcrmfmac module but nothing the card seems invisible or dead i don't
>>>>> know if is a problem of firmware or my system cannot detect the sdio
>>>>> card ...do you know something about this problematic ?
>>>> As always a kernel log could help or output from dmesg command. Also
>>>> can you run following commands: $ ls /sys/bus/sdio/devices $ cat
>>>> /sys/bus/sdio/devices/*/modalias Regards, Arend
>>> paolo@paolo:~$ ls /sys/bus/sdio/devices
>>> mmc1:0001:1
>>> paolo@paolo:~$
>>>
>>>
>>> paolo@paolo:~$ cat /sys/bus/sdio/devices/*/modalias sdio:c07v024CdB723
>>> paolo@paolo:~$ sorry for previous mail ....ls was from another pc....:-[
>>> it seems the system see only the card where the system is installed
>>
>> Hi Paolo,
>>
>> Interesting. Now if Google search is correct the vendor id for this
>> device indicates this is a Realtek (v024C) WLAN (c07) device. So what
>> makes you say its linux id is 02d0:a9a6?
>>
>> In upstream linux I do not see any SDIO device drivers in realtek
>> folder. Maybe Larry can provide clue/hint if a driver for this device is
>> publicly available somewhere.
> 
> Paolo,
> 
> The only Realtek SDIO device in common distribution is the RTL8723BS, 
> which has been packaged with some Intel processors, and may now be part 
> of other SBC's. This driver has been in staging since V4.12. It handles 
> SDIO Vendor code 0x024c with device codes 0x0523, 0x0623, 0x0626, and 
> 0xb723. If your device is one of these, then you only need to build a 
> kernel with this driver enabled.

He has device id 0xb723:

paolo@paolo:~$ cat /sys/bus/sdio/devices/*/modalias sdio:c07v024CdB723

So that driver should at least try to probe his device.

Regards,
Arend