netdev - Re: [PATCH 5/5] [powerpc] Fix up fsl-flexcan device tree binding.

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Message-ID: <4E41946D.4030003@freescale.com>
Date:	Tue, 9 Aug 2011 15:11:25 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Wolfgang Grandegger <wg@...ndegger.com>
CC:	<netdev@...r.kernel.org>,
	"Devicetree-discuss@...ts.ozlabs.org" 
	<Devicetree-discuss@...ts.ozlabs.org>,
	U Bhaskar-B22300 <B22300@...escale.com>,
	<socketcan-core@...ts.berlios.de>, Robin Holt <holt@....com>,
	PPC list <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH 5/5] [powerpc] Fix up fsl-flexcan device tree binding.

On 08/09/2011 02:32 PM, Wolfgang Grandegger wrote:
> On 08/09/2011 08:17 PM, Scott Wood wrote:
>> On 08/09/2011 09:43 AM, Robin Holt wrote:
>>> In working with the socketcan developers, we have come to the conclusion
>>> the fsl-flexcan device tree bindings need to be cleaned up. 
>>> The driver does not depend upon any properties other than the required properties
>>> so we are removing the file.
>>
>> That is not the criterion for whether something should be expresed in
>> the device tree.  It's a description of the hardware, not a Linux driver
>> configuration file.  If there are integration parameters that can not be
>> inferred from "this is FSL flexcan v1.0", they should be expressed in
>> the node.
>>
>> Removing the binding altogether seems extreme as well -- we should have
>> bindings for all devices, even if there are no special properties.
> 
> Yes, of course. The commit message misleading. We do not intend to
> remove the binding but just a few unused and confusing properties.

Is it a matter of the current driver not caring, or the properties just
not making sense for any reasonable driver (ambiguous, inferrable from
the flexcan version, software configuration, etc)?

-Scott

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