On Tue, Feb 17, 2015 at 07:07:14PM -0600, Rob Herring wrote: > On Tue, Feb 17, 2015 at 6:25 PM, Benjamin Herrenschmidt > <benh@xxxxxxxxxxxxxxxxxxx> wrote: > > So I've been annoyed lately with having a bunch of devices such as i2c > > eeproms (for use by VPDs, server world !) and other bits and pieces that > > I want to be able to identify from userspace, and possibly provide > > additional data about from FW. > > > > Basically, it boils down to correlating the sysfs device with the OF > > tree device node, so that user space can use device-tree info such as > > additional "location" or "label" (or whatever else we can come up with) > > propreties to identify a given device, or get some attributes of use > > about it, etc... > > > > Now, so far, we've done that in some subsystem in a fairly ad-hoc basis > > using "devspec" properties. For example, PCI creates them if it can > > correlate the probed device with a DT node. Some powerpc specific busses > > do that too. > > > > However, i2c doesn't and it would be nice to have something more generic > > since technically any device can have a corresponding device tree node. > > > > This patch adds an "of_node" symlink to devices that have a non-NULL > > dev->of_node pointer, the patch is pretty trivial and seems to work just > > fine for me. > > > > Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> > > Acked-by: Rob Herring <robh@xxxxxxxxxx> Thanks, I'll queue these up after 3.20-rc1 is out. greg k-h -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
