From: dedekind1@gmail.com (Artem Bityutskiy)
To: linux-arm-kernel@lists.infradead.org
Subject: [i.MX28 GPMI] problem overwriting all-0xff data in NAND
Date: Wed, 20 Jul 2011 08:16:35 +0300 [thread overview]
Message-ID: <1311139000.20738.146.camel@sauron> (raw)
In-Reply-To: <4E24E804.10002@freescale.com>
On Tue, 2011-07-19 at 10:12 +0800, Huang Shijie wrote:
> hi Lothar:
> > On Mon, Jul 18, 2011 at 03:13:27PM +0200, Lothar Wa?mann wrote:
> >> Hi,
> >>
> >> with the gpmi-nfc driver for imx28 from Shawn Guo on a TX28 I
> > To be clear, the author of gpmi-nfc driver is Huang Shijie (Cc-ed).
> >
> > Regards,
> > Shawn
> >
> >> encountered some problems with jffs2 when overwriting pages that have
> >> been written with 0xff (e.g. from padding from the file system image
> >> file).
> The GPMI driver now does not support the JFFS2 very well.
> The JFFS2 will write the OOB, while the BCH of GPMI will use the OOB too.
> So I have to disable the JFFS2 to use the OOB. I have not finish the
> code about it now.
>
> I recommend you use the UBIFS. But the latest version of GPMI driver
> meets a DMA bug.
> I am debugging the DMA bug now. and I will send it out when i fix it.
This is a different issue. You refer to the "GPMI-controlled flash has
no space in OOB for JFFS2". Lothar's issue is about "GPMI-controlled
flash does not allow writing 0xFFs and then writing something else",
which is very normal.
--
Best Regards,
Artem Bityutskiy
next prev parent reply other threads:[~2011-07-20 5:16 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-18 13:13 [i.MX28 GPMI] problem overwriting all-0xff data in NAND Lothar Waßmann
2011-07-18 14:56 ` Ivan Djelic
2011-07-19 5:59 ` Lothar Waßmann
2011-07-19 6:48 ` Ivan Djelic
2011-07-18 16:43 ` Shawn Guo
2011-07-19 2:12 ` Huang Shijie
2011-07-19 6:02 ` Lothar Waßmann
2011-07-19 7:03 ` Huang Shijie
2011-07-19 9:55 ` Lothar Waßmann
2011-07-19 13:36 ` Wolfram Sang
2011-07-20 2:18 ` Huang Shijie
2011-07-20 8:51 ` Wolfram Sang
2011-07-20 4:55 ` Huang Shijie
2011-07-20 6:22 ` Lothar Waßmann
2011-07-20 5:16 ` Artem Bityutskiy [this message]
2011-07-20 5:19 ` Artem Bityutskiy
2011-07-19 6:00 ` Lothar Waßmann
2011-07-20 6:44 ` Huang Shijie
2011-07-20 8:10 ` Lothar Waßmann
2011-07-20 8:35 ` Artem Bityutskiy
2011-07-20 5:12 ` Artem Bityutskiy
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