[U-Boot] Makefile: Update minimum dtc version to 1.4.3

[Tom Rini]

On Sun, Sep 24, 2017 at 02:07:27PM +0200, Marek Vasut wrote:
> On 09/24/2017 01:36 PM, Tom Rini wrote:
> > On Sun, Sep 24, 2017 at 10:28:18AM +0200, Marek Vasut wrote:
> >> On 09/24/2017 05:22 AM, Tom Rini wrote:
> >>> On Sat, Sep 23, 2017 at 09:07:02PM -0500, Robert Nelson wrote:
> >>>> On Sat, Sep 23, 2017 at 8:49 PM, Bin Meng <bmeng.cn at gmail.com> wrote:
> >>>>> Hi Tom,
> >>>>>
> >>>>> On Sun, Sep 24, 2017 at 12:10 AM, Tom Rini <trini at konsulko.com> wrote:
> >>>>>> On Sat, Sep 23, 2017 at 03:04:39PM +0200, Marek Vasut wrote:
> >>>>>>> On 09/23/2017 02:56 PM, Tom Rini wrote:
> >>>>>>>> On Sat, Sep 23, 2017 at 12:39:44PM +0200, Marek Vasut wrote:
> >>>>>>>>> On 09/22/2017 04:20 PM, Tom Rini wrote:
> >>>>>>>>>> On Fri, Sep 15, 2017 at 01:15:25PM -0400, Tom Rini wrote:
> >>>>>>>>>>
> >>>>>>>>>>> With support for overlays and calling the -@ flag to dtc we need to have
> >>>>>>>>>>> at least 1.4.3 available now.
> >>>>>>>>>>>
> >>>>>>>>>>> Cc: Simon Glass <sjg at chromium.org>
> >>>>>>>>>>> Reported-by: Stephen Warren <swarren at wwwdotorg.org>
> >>>>>>>>>>> Signed-off-by: Tom Rini <trini at konsulko.com>
> >>>>>>>>>>
> >>>>>>>>>> Applied to u-boot/master, thanks!
> >>>>>>>>>
> >>>>>>>>> Debian still only has 1.4.2 even in unstable, so u-boot/master no longer
> >>>>>>>>> builds on any debian system.
> >>>>>>>>
> >>>>>>>> Then perhaps we need to mirror the kernel and provide / build dtc, but
> >>>>>>>> allow for people to override it.
> >>>>>>>
> >>>>>>> What about allowing old DTC version if DTOs are not in use ?
> >>>>>>
> >>>>>> If you can re-work the logic for that, sure, thanks!
> >>>>>>
> >>>>>
> >>>>> Ubuntu 16.04 LTS is still at dtc v1.4.0, so it's broken there too.
> >>>>
> >>>> Maybe it's just time to embed a copy of dtc into u-boot (like the
> >>>> kernel, especially since we use so many features...)?
> >>>
> >>> That is my intention at this point, and I'm testing a small series to do
> >>> that now (the last pain point looks to have been the patch that allows
> >>> 'DTC' to be over-ridden for FreeBSD).
> >>
> >> cfr my comment about vendoring , I'd really hate to go down that path.
> >> Chrome does that and look what came out of it -- outdated patched
> >> packages in the chrome codebase, with debian trying hard to unbundle
> >> that stuff again.
> > 
> > Yes, but we're going to do it all the same.  We're tied to some of the
> > tools we need and vendors aren't keeping pace with them either.  dtc
> > 1.4.0 (Ubuntu 16.04) is from 2013.  dtc 1.4.3 is from last December.
> 
> The new DTC version is only mandated by DTO support, which is not used
> by anyone to my knowledge at this point. Whoever wants to use DTO,
> should have new enough DTC and I'm fine with the build failing if they
> don't.

Why yes, there is a chicken-and-egg problem with DTO support and
adoption.  Happily, Google has picked it up as part of how things are to
be done with Android 8 so it should finally see wider adoption.

-- 
Tom
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