From mboxrd@z Thu Jan  1 00:00:00 1970
From: Helmut Raiger <helmut.raiger@hale.at>
Date: Wed, 20 Jul 2011 08:55:00 +0200
Subject: [U-Boot] [PATCH] mxc_nand: fix a problem writing more than 32MB
In-Reply-To: <1309971881-3797-1-git-send-email-helmut.raiger@hale.at>
References: <1309971881-3797-1-git-send-email-helmut.raiger@hale.at>
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On 07/06/2011 07:04 PM, helmut.raiger at hale.at wrote:
> From: Helmut Raiger<helmut.raiger@hale.at>
>
> When writing 0x4000 to the unlockend_blkaddr register, large writes to
> a 2k page NAND sometimes fail. The current kernel driver writes 0xFFFF
> to this register for V2 of the nand controller.
>
> However on an i.MX31 this also fixes writes larger than 32MB.
> The datasheet is very unspecific, but (0x4000=16384)*2000
> roughly fits the limits we're encountering with NAND writes.
> This problem might be NAND chip specific.
Any comments?
Helmut


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