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SubjectRe: [PATCH v2] drm/i2c: tda998x: Change the compatible strings
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@gmail.com> 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.

--
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.


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