linux-kernel - Re: [PATCH 06/12] mtd: nand: davinci: adjust DT properties to MTD generic

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Date:	Tue, 26 Nov 2013 12:49:46 +0200
From:	"ivan.khoronzhuk" <ivan.khoronzhuk@...com>
To:	Grygorii Strashko <grygorii.strashko@...com>,
	Sekhar Nori <nsekhar@...com>,
	"Shilimkar, Santosh" <santosh.shilimkar@...com>,
	Rob Landley <rob@...dley.net>,
	Russell King <linux@....linux.org.uk>
CC:	Mark Rutland <mark.rutland@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Pawel Moll <pawel.moll@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...nel.crashing.org>,
	Rob Herring <rob.herring@...xeda.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 06/12] mtd: nand: davinci: adjust DT properties to MTD
 generic

On 11/26/2013 12:30 PM, Grygorii Strashko wrote:
> On 11/26/2013 09:03 AM, Sekhar Nori wrote:
>> On Monday 11 November 2013 10:31 PM, Khoronzhuk, Ivan wrote:
>>> The properties davinci-ecc-mode, davinci-nand-use-bbt, davinci-nand-buswidth
>>> are MTD generic. Correct names for them are: nand-ecc-mode, nand-on-flash-bbt,
>>> nand-bus-width accordingly. So rename them in dts and documentation.
>>>
>>> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@...com>
>>> ---
>>>    .../devicetree/bindings/mtd/davinci-nand.txt       |   25 ++++++++++++++++----
>>>    drivers/mtd/nand/davinci_nand.c                    |   11 ++++++---
>>>    2 files changed, 28 insertions(+), 8 deletions(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/mtd/davinci-nand.txt b/Documentation/devicetree/bindings/mtd/davinci-nand.txt
>>> index d2a3fc0..befaa5b 100644
>>> --- a/Documentation/devicetree/bindings/mtd/davinci-nand.txt
>>> +++ b/Documentation/devicetree/bindings/mtd/davinci-nand.txt
>>> @@ -37,7 +37,7 @@ Recommended properties :
>>>    - ti,davinci-mask-chipsel:     mask for chipselect address. Needed to mask
>>>                                   addresses for given chipselect.
>>>
>>> -- ti,davinci-ecc-mode:         operation mode of the NAND ecc mode. ECC mode
>>> +- nand-ecc-mode:               operation mode of the NAND ecc mode. ECC mode
>>>                                   valid values for davinci driver:
>>>                                   - "none"
>>>                                   - "soft"
>>> @@ -45,10 +45,25 @@ Recommended properties :
>>>
>>>    - ti,davinci-ecc-bits:         used ECC bits, currently supported 1 or 4.
>>>
>>> -- ti,davinci-nand-buswidth:    buswidth 8 or 16.
>>
>> Shouldn't we keep the documentation for existing bindings while just
>> marking them as deprecated?
>
> I haven't found any requirements about this in doc.
> It's done in both way in other drivers - some keep properties in bindings
> documentation and some are not.
>
> Regards,
> -grygorii
>

For me this is not needed, but for example from mtd:
Documentation/devicetree/bindings/mtd/gpmc-nand.txt
,it contains deprecated properties, like a lot of others.

And this sad me I should remain deprecated properties.
Anyway if we have these properties in driver we should describe them.

-- 
Regards,
Ivan Khoronzhuk
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