[Gta04-owner] 3.12-rc kernel for GTA04 with extensive device-tree support.

[NeilBrown]

On Sun, 13 Oct 2013 14:38:29 +0200 Belisko Marek <marek.belisko at gmail.com>
wrote:

> Hi Neil,
> 
> On Sun, Oct 13, 2013 at 1:38 PM, NeilBrown <neilb at suse.de> wrote:
> >
> >
> > "device-tree" is how kernels "should" be configured for ARM device - or so we
> > are told.
> > So I've spent a while figuring out what that means and making it work for the
> > GTA04.
> > Starting with Marek Belisko's dts file for the GTA04, I've added various
> > devices, hacking some of them to understand device tree.
> > The result is in my 'mainline' branch, e.g.
> >
> >    git://neil.brown.name/gta04 mainline
> Great. Looks promising.

Thanks.

> >
> > There is still a "board" file as a couple of things cannot easily be
> > converted to devicetree, including omapdss - the video driver.  It is very
> omapdss for various omap board is hacked in dss-common.c so probably we can
> remove code from gta04 board file and upstream that part.
> > small though and hopefully will go away in the not too distant future.
> > There are also a number of hacks that are unlikely to go upstream.
> > And there are quite a number of bug fixes and driver improvements missing.
> > These will come in time.
> Should we try to push gpio-reg? I see a lot of dependencies on that driver.

I had really hoped that "runtime interpreted power sequences" would be ready
by now.  Then I would change omap-serial to control one of those as the DTR
line rather than a GPIO, and then gpio-reg wouldn't be needed.  But there
hasn't been any sign of development there since late last year.
I might ask the developer of that to see where it is at.


> >
> > I see completing device tree support as being on the critical path to full
> > upstream support for the GTA04.  I want to be able to run an upstream kernel
> > on my phone one day, and I think this gets us one step closer.
> >
> > Over the next weeks I hope to push some of the simpler stuff upstream, and
> > merge in the missing improvements and bugfixes.
> Can you please add me and Nikolaus to CC to avoid duplicate our
> efforts (also we add you on our upstream patches)

Will do.

NeilBrown
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