Re: [U-Boot] recommended action for bootloaders regarding modifying device-tree nodes

2014-01-30 Thread Jason Gunthorpe
On Thu, Jan 30, 2014 at 03:45:58PM -0500, Jason Cooper wrote: > This is more of a process question: Is there any information captured > in your EEPROM that can't be represented in the dtb? iow, at the point > when you write the EEPROM, why not write the dtb to it as configured? I can share what

Re: [U-Boot] [RFC] Kbuild support for ARM FIT images

2013-02-22 Thread Jason Gunthorpe
On Fri, Feb 22, 2013 at 02:56:33AM -0500, Jason Kridner 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,

Re: [U-Boot] [RFC] Kbuild support for ARM FIT images

2013-02-21 Thread Jason Gunthorpe
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 a

Re: [U-Boot] [RFC] Kbuild support for ARM FIT images

2013-02-21 Thread Jason Gunthorpe
On Fri, Feb 22, 2013 at 12:18:48AM +0100, Wolfgang Denk wrote: > > The DT is meant to describe hardware. As far as I know, the hardware I > > own seems to be rather static and stable, and unlike software there is > > no way I can change it (soldering irons don't count). > > There is other hard

Re: [U-Boot] [RFC] Kbuild support for ARM FIT images

2013-02-21 Thread Jason Gunthorpe
On Thu, Feb 21, 2013 at 05:05:54PM -0500, Nicolas Pitre wrote: > On Thu, 21 Feb 2013, Jason Gunthorpe wrote: > > > On Thu, Feb 21, 2013 at 02:57:46PM -0500, Nicolas Pitre wrote: > > > For embedded appliance product you may do as you wish. Nobody will > > > interf

Re: [U-Boot] [RFC] Kbuild support for ARM FIT images

2013-02-21 Thread Jason Gunthorpe
On Thu, Feb 21, 2013 at 02:57:46PM -0500, Nicolas Pitre wrote: > On Thu, 21 Feb 2013, Jason Gunthorpe wrote: > > > On Thu, Feb 21, 2013 at 12:25:21PM -0500, Nicolas Pitre wrote: > > > > > So let's stop kidding ourselves and be coherent please: either we move >

Re: [U-Boot] [RFC] Kbuild support for ARM FIT images

2013-02-21 Thread Jason Gunthorpe
On Thu, Feb 21, 2013 at 07:08:20PM +, Russell King - ARM Linux wrote: > > We've been using DT on production embedded stuff sice about 2.6.20ish > > on PPC and now ARM. We treat the dtb as a kernel version specific > > file, much like an initrd and ensure that the kernel only ever boots > > wit

Re: [U-Boot] [RFC] Kbuild support for ARM FIT images

2013-02-21 Thread Jason Gunthorpe
On Thu, Feb 21, 2013 at 12:25:21PM -0500, Nicolas Pitre wrote: > So let's stop kidding ourselves and be coherent please: either we move > device specifics away from the kernel, or we keep them together. In > other words, the DT should ideally come preinstalled with the bootloader > on a given