linux-kernel - Re: [PATCH v4 3/3] Documentation: of: Document graph bindings

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Date:	Wed, 26 Feb 2014 15:14:17 +0200
From:	Tomi Valkeinen <tomi.valkeinen@...com>
To:	Philipp Zabel <p.zabel@...gutronix.de>
CC:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	<linux-kernel@...r.kernel.org>, <linux-media@...r.kernel.org>,
	<devicetree@...r.kernel.org>,
	Guennadi Liakhovetski <g.liakhovetski@....de>
Subject: Re: [PATCH v4 3/3] Documentation: of: Document graph bindings

On 25/02/14 16:58, Philipp Zabel wrote:

> +Optional endpoint properties
> +----------------------------
> +
> +- remote-endpoint: phandle to an 'endpoint' subnode of a remote device node.

Why is that optional? What use is an endpoint, if it's not connected to
something?

Also, if this is being worked on, I'd like to propose the addition of
simpler single-endpoint cases which I've been using with OMAP DSS. So if
there's just a single endpoint for the device, which is very common, you
can have just:

device {
	...
	endpoint { ... };
};

However, I guess that the patch just keeps growing and growing, so maybe
it's better to add such things later =).

 Tomi

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