On 02/21/2013 08:22 PM, Jason Gunthorpe wrote: > On Thu, Feb 21, 2013 at 06:19:05PM -0600, Rob Herring wrote: > >> The desired FPGA use case is DT updates after booting the kernel. This >> has nothing to do with FIT images. And if the FPGA tools generate the >> DTB, then it is certainly not tied to the kernel. > > Completely unrelated, but do you have any pointer for how to do this? > Hot plugging a 'dtb fragment' into the kernel would be really handy.. > Look at "Introducing Device Tree Overlays" on devicetree-discuss and lkml. > I'm thinking something like adding a tree below a PCI controller > describing a PCI device and sub nodes, similar to what Thierry was > doing for his Avionics. How would interrupt maps and phandles be > managed across the main dtb and the 'hot plugged' dtb? Generally you don't describe the devices on PCI unless there are non-discoverable aspects like a sideband gpio. Rob -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
