RPi-3 brcmfmac errors on boot

[Michael Zoran]

On Wed, 2016-11-23 at 14:35 -0500, Don Zickus wrote:
> Hi,
> 
> I am trying to get bluetooth working on the RPi-3 and realized I
> needed some
> out-of-box drivers in Gerd's tree:
> 
> https://www.kraxel.org/cgit/linux/log/?h=bcm2837-wifi
> 
> Combining his tree with a patch to remove pwr
> 
> https://github.com/anholt/linux/commit/a44e87b47148c6ee6b78509f47e6a1
> 5c0fae890a
> 
> I can get the SDIO device detected and the brcmfmac driver to probe
> it.
> 
> However, that results in the following error message:
> 
> """
> brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50
> """
> 
> and neither the wifi nor bluetooth device get detected and added to
> the bus.
> 

I see this alot on the downstream tree if the firmware file hasn't been
copied from Raspbian.   So just to ask an obvious question, did you
copy the firmware file?