[PATCH 2/2] spi: devicetree: add support for loopback mode

[Grant Likely]

On Sat, 15 Dec 2012 16:55:46 +0200, Felipe Balbi <balbi at ti.com> wrote:
> On Sat, Dec 15, 2012 at 12:32:24AM +0000, Grant Likely wrote:
> > On Wed, 12 Dec 2012 10:46:00 +0200, Felipe Balbi <balbi at ti.com> wrote:
> > > there are a few spi master drivers which make
> > > use of that flag but there is no way to pass it
> > > through devicetree.
> > > 
> > > This patch just creates a way to pass SPI_LOOP
> > > via devicetree.
> > 
> > I don't understand how this would be useful since loopback mode is
> > really just a test feature. Is there any reason to do loopback for
> > something other than test?
> > 
> > I think it would be better to add a sysfs or debugfs property to
> > manipulate the SPI_LOOP flag from userspace. What do you think?
> 
> might be nicer in the long run, indeed. Want me to look into it, or do
> you wanna do it yourself ?

Yes, please look into it. After all, you're the one who needs the feature/  :-)

g.