Hi Wolfram:

On Fri, Jul 22, 2011 at 11:30:41AM +0800, Huang Shijie wrote:

quoted

Hi,

quoted

quoted

The general-purpose media interface(GPMI) controller is a flexible interface
to up to several NAND flashs.

...

quoted

To Walfram&  Artem:
     About how to disable the JFFS2 to use the OOB:
     I read the code, and I still have no idea about how to use the ecclayout
     to do the job. Could you give me some hint? thanks.

Have you checked mxc_nand.c for example? There is

static struct nand_ecclayout nandv1_hw_eccoob_smallpage = {
         .eccbytes = 5,
         .eccpos = {6, 7, 8, 9, 10},
         .oobfree = {{0, 5}, {12, 4}, }
}

defined as one layout. Now, you could define one where oobfree is empty and
eccbytes as big as the oob-area.

thanks. I will check the code.

quoted

quoted

The driver depends on another GPMI-NAND device patch set, you can find them at :
	[1] http://lists.infradead.org/pipermail/linux-mtd/2011-July/037033.html
	[2] http://lists.infradead.org/pipermail/linux-mtd/2011-July/037031.html
	[3] http://lists.infradead.org/pipermail/linux-mtd/2011-July/037032.html
	[4] http://lists.infradead.org/pipermail/linux-mtd/2011-July/037034.html

The driver also depends on another DMA patch by Shawn:
	[0] http://lists.infradead.org/pipermail/linux-mtd/2011-June/036820.html

This makes it difficult for testers/reviewers. Please try to get a git-branch
from Freescale or Linaro.

Shawn will merge my patches to his Linaro branch.

git://git.linaro.org/people/shawnguo/linux-2.6.git mxs-gpmi

Please test the GPMI driver based this git tree.

I tested, and the DMA-timeout does not occur any more.

I notice that Shawn added two more patched to 
/arch/arm/config/mxs_defconfig:
[1] ARM: mxs_defconfig: Add mx23evk and mx28evk build
[2] ARM: mxs_defconfig: Change CONFIG_RTC_CLASS 'm' to 'y'

Please check it. Maybe your kernel code misses them.

Of course, you can use the my_config (i sent you last mail) for .config.

Best Regards
Huang Shijie

Shijie, please check and test it.  I only did a build test.