linux-kernel - Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms

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Date:	Mon, 22 Feb 2016 22:05:08 +0200
From:	Roger Quadros <rogerq@...com>
To:	Tony Lindgren <tony@...mide.com>
CC:	<computersforpeace@...il.com>, <dwmw2@...radead.org>,
	<ezequiel@...guardiasur.com.ar>, <javier@...hile0.org>,
	<fcooper@...com>, <nsekhar@...com>,
	<linux-mtd@...ts.infradead.org>, <linux-omap@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND
 on non-OMAP platforms

On 22/02/16 18:42, Tony Lindgren wrote:
> * Roger Quadros <rogerq@...com> [160222 02:16]:
>> On 20/02/16 00:04, Tony Lindgren wrote:
>>> * Roger Quadros <rogerq@...com> [160219 13:27]:
>>>> Hi,
>>>>
>>>> @Tony
>>>> Patches 15 and 24 are new and will need your review.
>>>> I've modified patch 22 to include the new am335x boards introduced since v4.4.
>>>>
>>>> Patches are based on top of omap-for-v4.6/dt so that the DT changes apply cleanly.
>>>
>>> Looks OK to me. Can we merge the dts changes separately? Otherwise
>>> we will easily end up with tons of conflicts..
>>
>> I agree. But we just need to keep in mind that NAND functionality will be
>> broken till all the patches in this series are merged. We don't maintain
>> backward compatibility with the old DT implementation.
> 
> Please let's not do that! That breaks booting and git bisect.
> It's better to have a minimal branch where each patch boots fine.

Understood. I'll send out a patch set with only the minimal DT changes
that doesn't break anything. This should be a preparatory step for
the DT clean up.

> 
> Also, I think you should at least print a warning for the old
> binding. Otherwise people with out of tree boards will have
> hard time updating their patches to send to mainline tree.

OK. I'll add this warning mechanism to the omap-gpmc driver.

cheers,
-roger