Re: [RFC 00/22] OMAPDSS: DT support

* Tomi Valkeinen [off-list ref] [130830 02:55]:

On 13/08/13 10:54, Tony Lindgren wrote:

quoted

* Tomi Valkeinen [off-list ref] [130809 01:46]:

quoted

So as is evident, I have things in my mind that should be improved. Maybe
the most important question for short term future is:

Can we add DSS DT bindings for OMAP4 as unstable bindings? It would give us
some proper testing of the related code, and would also allow us to remove
the related hacks (which don't even work quite right). However, I have no
idea yet when the unstable DSS bindings would turn stable.

If we shouldn't add the bindings as unstable, when should the bindings be
added? Wait until CDF is in the mainline, and use that?

I don't think we should add any temporary bindings as it's going to be
a pain to support those in the long run. I suggest you initially just
stick to established bindings for the basic hardware IO address and
interrupts etc, then those should still be valid with the generic panel
bindings later on.

I don't understand what does it matter if the bindings are temporary, or
basic established bindings. In both cases the DT data needs to be
changed when the CDF is taken into use.

Yes but the old bindings still need to be supported because people
are doing devices using those. So any kind of temporary binding will be
a pain to support.
 

Well, one difference is that the temporary bindings would give us
working display, but having only basic bindings would not. So I don't
see any reason to add only the basic bindings. Or how would it work?

You might be able to use just a minimal binding for now using the
basic reg, interrupt and entries for the various components. Those will
be still valid when the CDF bindings are available.

Regards,

Tony