Re: [RFC PATCH] [media]: of: move graph helpers from drivers/media/v4l2-core to drivers/of

From: Grant Likely
Date: Fri Mar 21 2014 - 04:16:01 EST


On Fri, 21 Mar 2014 00:26:12 +0100, Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> wrote:
> On Thursday 20 March 2014 23:12:50 Grant Likely wrote:
> > On Thu, 20 Mar 2014 19:52:53 +0100, Laurent Pinchart wrote:
> > > Then we might not be talking about the same thing. I'm talking about DT
> > > bindings to represent the topology of the device, not how drivers are
> > > wired together.
> >
> > Possibly. I'm certainly confused now. You brought up the component helpers
> > in drivers/base/component.c, so I thought working out dependencies is part
> > of the purpose of this binding. Everything I've heard so far has given me
> > the impression that the graph binding is tied up with knowing when all of
> > the devices exist.
>
> The two are related, you're of course right about that.
>
> We're not really moving forward here. Part of our disagreement comes in my
> opinion from having different requirements and different views of the problem,
> caused by experiences with different kind of devices. This is much easier to
> solve by sitting around the same table than discussing on mailing lists. I
> would propose a meeting at the ELC but that's still a bit far away and would
> delay progress by more than one month, which is probably not acceptable.
>
> I can reply to the e-mail where I've drawn one use case I have to deal with to
> detail my needs if that can help.
>
> Alternatively the UK isn't that far away and I could jump in a train if you
> can provide tea for the discussion :-)

I'm game for that, but it is a long train ride. I'm up in Aberdeen which
is 8 hours from London by train. Also, I'm travelling next week to
California (Collaboration summit), so it will have to be in 2 weeks
time.

Why don't we instead try a Google Hangout or a phone call today.
Anywhere between 11:30 and 14:00 GMT would work for me. I'd offer to
provide the tea, but I haven't quite perfected transporter technology
yet.

g.

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