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Date:	Thu, 20 Mar 2014 11:44:43 -0600
From:	Warner Losh <>
To:	Santosh Shilimkar <>
Cc:	Brian Norris <>,
	Ivan Khoronzhuk <>,
	David Woodhouse <>,,,,,,,
	Russell King - ARM Linux <>,,,,,,,
	Murali Karicheri <>
Subject: Re: [PATCH 2/3] mtd: davinci-nand: add dts property for NAND_NO_SUBPAGE_WRITE option

On Mar 20, 2014, at 11:37 AM, Santosh Shilimkar <> wrote:

> 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,
>> Who's Boris? And why should Boris be taking this patch? It's an MTD
>> patch.
> I got your name completely wrong. Sorry....
>>> On Thursday 20 March 2014 01:06 PM, Ivan Khoronzhuk wrote:
>>>> From: Murali Karicheri <>
>>>> 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.
>> 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.
> 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?


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