brcm8021: BCM43341

brcm8021: BCM43341

[Aron Szabo]

Hi!

I have an ASUS T200TA that has this chip BCM43341 02D0:A94D 
(http://www.broadcom.com/products/Bluetooth/Bluetooth-RF-Silicon-and-Software-Solutions/BCM43341).
This chip is supported by the bcmdhd driver under Android, but not by 
this driver.

I tried to modify the driver to load the firmware extracted from the 
Windows version, but I had no luck:

brcmfmac_sdio mmc1:0001:1: Direct firmware load failed with error -2
brcmfmac_sdio mmc1:0001:1: Falling back to user helper

The sta driver from Broadcom does not support this chip.

Without documentation and any knowledge of how wireless chips work, what 
I can do is probably useless trial and error, so I wanted to ask for help :)

Ha someone worked with this chip? Can somebody point me in the right 
direction ?

Thanks!

Yours,
Aron

Re: brcm8021: BCM43341

[Arend van Spriel]

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On 02-10-14 16:14, Aron Szabo wrote:
> Hi!
> 
> I have an ASUS T200TA that has this chip BCM43341 02D0:A94D
> (http://www.broadcom.com/products/Bluetooth/Bluetooth-RF-Silicon-and-Software-Solutions/BCM43341).
> 
> This chip is supported by the bcmdhd driver under Android, but not by
> this driver.
> 
> I tried to modify the driver to load the firmware extracted from the
> Windows version, but I had no luck:
> 
> brcmfmac_sdio mmc1:0001:1: Direct firmware load failed with error -2
> brcmfmac_sdio mmc1:0001:1: Falling back to user helper

This can mean different things
> The sta driver from Broadcom does not support this chip.

Yep. The Broadcom wl sta driver is for softmac devices and the bcm43341
is a fullmac device.

> Without documentation and any knowledge of how wireless chips work, what
> I can do is probably useless trial and error, so I wanted to ask for
> help :)
> 
> Ha someone worked with this chip? Can somebody point me in the right
> direction ?

Nope. However, I provided a patch for bcm43340 which basically uses
/lib/firmware/brcm/brcmfmac4334-sdio.bin. I don't know what you changed
in brcmfmac so please share details about what you did. Attached is the
patch I mentioned, but it needs to be modified for bcm43341.

Regards,
Arend

> Thanks!
> 
> Yours,
> Aron
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