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Subject: Re: [PATCH 2/3] mtd: davinci-nand: add dts property for
 NAND_NO_SUBPAGE_WRITE option
From: Warner Losh <imp@bsdimp.com>
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Date: Thu, 20 Mar 2014 11:44:43 -0600
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To: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, grygorii.strashko@ti.com,
 Russell King - ARM Linux <linux@arm.linux.org.uk>, pawel.moll@arm.com,
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 Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>,
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On Mar 20, 2014, at 11:37 AM, Santosh Shilimkar =
<santosh.shilimkar@ti.com> wrote:

>=20
>=20
> On Thursday 20 March 2014 01:29 PM, Brian Norris wrote:
>> On Thu, Mar 20, 2014 at 01:12:35PM -0400, Santosh Shilimkar wrote:
>>> Boris,
>>=20
>> Who's Boris? And why should Boris be taking this patch? It's an MTD
>> patch.
>>=20
> I got your name completely wrong. Sorry....
>=20
>>> On Thursday 20 March 2014 01:06 PM, Ivan Khoronzhuk wrote:
>>>> From: Murali Karicheri <m-karicheri2@ti.com>
>>>>=20
>>>> After testing NAND flash with ubifs for k2hk-emv board were =
committed
>>>> that flash doesn't support subpage writing, so we can fix it by
>>>> adding a property to disable subpage write.
>>=20
>> What flash? We try to autodetect NAND as much as possible. Perhaps we
>> should be adding infrastructure support instead of hacking it with a =
DT
>> property.
>>=20
> We can't auto detect it and thats why the DT approach was taken. We
> will double check that.

I though sub page writing was one of the fields in the onfi and/or =
jedec(toggle) meta data structures. Have you looked there?

Warner