Re: device trees.

[Grant Likely <grant.likely@secretlab.ca>]

On Fri, May 8, 2009 at 10:03 AM, David H. Lynch Jr. <dhlii@dlasys.net> wrot=
e:
> =A0 =A0Is there an example somewhere that shows building a device tree on
> the fly ?
>
> =A0 =A0As our products move forward it becomes increasingly clear that
> static configurations are not going to work.

Knowing your history, I assume you're talking about FPGA device trees
here.  Are you doing partial reconfiguration at runtime?  Or are you
talking about generating a device tree to match the FPGA design?

For the later, there is a tool which works with EDK to generate a
device tree based on an EDK design.  You can find it on the xilinx git
server:

http://git.xilinx.com/cgi-bin/gitweb.cgi?p=3Ddevice-tree.git;a=3Dsummary

To use device tree with partial reconfiguration would require rework
to the device tree infrastructure to prune and graft portions of the
device tree.  I think it is possible, but it is non-trivial to get
working.

Cheers,
g.

--=20
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.