linux-kernel - Re: [PATCH v4 1/3] [media] of: move graph helpers from drivers/media/v4l2-core to drivers/of

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Message-id: <532C4841.9090508@samsung.com>
Date:	Fri, 21 Mar 2014 15:10:09 +0100
From:	Sylwester Nawrocki <s.nawrocki@...sung.com>
To:	Tomi Valkeinen <tomi.valkeinen@...com>
Cc:	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Grant Likely <grant.likely@...aro.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Rob Herring <robh+dt@...nel.org>,
	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>,
	Philipp Zabel <philipp.zabel@...il.com>
Subject: Re: [PATCH v4 1/3] [media] of: move graph helpers from
 drivers/media/v4l2-core to drivers/of

On 21/03/14 14:37, Tomi Valkeinen wrote:
> On 21/03/14 00:32, Laurent Pinchart wrote:
> 
>> > The OF graph bindings documentation could just specify the ports node as 
>> > optional and mandate individual device bindings to specify it as mandatory or 
>> > forbidden (possibly with a default behaviour to avoid making all device 
>> > bindings too verbose).
>
> Isn't it so that if the device has one port, it can always do without
> 'ports', but if it has multiple ports, it always has to use 'ports' so
> that #address-cells and #size-cells can be defined?
> 
> If so, there's nothing left for the individual device bindings to decide.

Wouldn't it make the bindings even more verbose ? Letting the individual
device bindings to decide sounds more sensible to me.

--
Thanks,
Sylwester
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