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Date:	Fri, 21 Mar 2014 08:15:34 +0000
From:	Grant Likely <>
To:	Laurent Pinchart <>
Cc:	Mauro Carvalho Chehab <>,
	Russell King - ARM Linux <>,
	Tomi Valkeinen <>,
	Philipp Zabel <>,
	Sascha Hauer <>,
	Rob Herring <>,
	Rob Herring <>,
	Sylwester Nawrocki <>,
	Kyungmin Park <>,
	"" <>,
	"" <>,
	"" <>,
	Philipp Zabel <>
Subject: Re: [RFC PATCH] [media]: of: move graph helpers from drivers/media/v4l2-core to drivers/of

On Fri, 21 Mar 2014 00:26:12 +0100, Laurent Pinchart <> 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

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


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