Re: [PATCH v2] drm/i2c: tda998x: Change the compatible strings

[Sebastian Hesselbarth]

On 03/23/2014 09:03 PM, Russell King - ARM Linux wrote:
> On Sun, Mar 23, 2014 at 07:12:05PM +0100, Sebastian Hesselbarth wrote:
> > On 03/23/2014 11:19 AM, Jean-Francois Moine wrote:
> > > On Fri, 21 Mar 2014 14:37:52 +0100
> > > Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx> wrote:
> > > > >     Required properties;
> > > > > -  - compatible: must be "nxp,tda998x"
> > > > > +  - compatible: may be "nxp,tda9989", "nxp,tda19988" or "nxp,tda19989"
> > > >
> > > > There is a "DT is ABI" policy and although there is no mainline Linux
> > > > user of current compatible, the correct way would be to deprecate
> > > > "nxp,tda998x" and introduce new compatibles.
> > >
> > > Pratically, what is this way?
> >
> > Currently, there is no effective way to deprecate a binding or
> > compatible. You just add the one(s) that are more sensible and
> > you mark the old one as DEPRECATED by simply writing it in the
> > binding doc.
> >
> > The driver should support the old binding at least for a while.
>
> It doesn't need to - it's only been in development trees so far, and
> never been in a mainline full release.  Until it does, the binding
> does not become stable.

Ok, I see. Thanks for the clarification. A note about it would
have been nice though. Anyway, sorry for the noise.

Sebastian

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