[PATCH 2/3] doc: dt: add cyclone-spi binding document

[atull@opensource.altera.com (atull)]

On Fri, 7 Oct 2016, Moritz Fischer wrote:

> > +referred to as "passive serial".
> > +The passive serial link is not technically spi, and might require extra
> > +circuits in order to play nicely with other spi slaves on the same bus.
> > +
> > +See https://www.altera.com/literature/hb/cyc/cyc_c51013.pdf
> > +
> > +Required properties:
> > +- compatible  : should contain "altr,cyclonespi-fpga-mgr"
> 
> Alan, do you guys have any input on the compat string?

We want to make it clear that this is for fpga configuration
using a specific programming method (passive serial).

How about altr,cyclone-ps-spi ?

> 
> I think generally the bindings should go before the actual usage in
> your patch series. Meaning you wanna document the binding
> before you use it. I think this patch should be [1/3].

I agree.

Thanks,
Alan

> 
> Cheers,
> 
> Moritz
>