Recompiling the kernel won't be necessary -- try this:
http://www.tnhh.net/posts/unbricking-chromebook-with-beaglebone.html

Relevant part:
"I have a trick that is not mentioned in the wiki to save you from the
agony of re-compiling the freaking kernel just to get the spidev
working. Instead of defining compatible = "linux,spidev";, in the dts
file, you can define compatible = "rohm,dh2228fv";."

Let me know if you have any questions on getting this to work. It worked
for a while but when I pulled everything apart and tried again, and I
got stuck. Nonetheless I have committed the steps to memory at this point :P

On 03/12/16 14:06, dch wrote:
> Hello,
> 
> I can't seem to get spidev working on my Beaglebone black, and I think it's 
> an issue with the kernel. 
> Can anyone send me a compiled kernel where SPI works, and/or a kernel .config?
> 
> Thanks
> 
> 


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