On 12.02.2014 00:02, Olof Johansson wrote:
On Fri, Feb 7, 2014 at 6:52 PM, Tomasz Figa <tomasz.figa@xxxxxxxxx> wrote:
Adding new required properties to an already defined binding is breaking
backwards compatibility, which is supposed to be preserved, since DT is an
ABI.
Now, I'm not really a big fan of DT stability, but if we decide to maintain
it for other Exynos drivers as well (e.g. USB), then we probably should do
the same here...
A binding without users _can_ be changed.
Of course it can. However hdmi binding apparently already has users,
since git grep hdmi over Exynos dts files shows 4 boards using HDMI, so
I'm not sure it's the case here.
If you're sure that there
are no users of the old binding, and that any users can and will
(without complaint or surprise) update to a newer DT with the newer
binding, then you can change it. I'm not sure if the cat is out of the
bag w.r.t. users of upstream Exynos kernels that this is true or not.
The question is whether there are really users of upstream kernels that
would care, i.e. don't always simply use DTB and kernel built from the
same tree.
Best regards,
Tomasz
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/dri-devel
