[PATCH v8 0/3] add the GPMI controller driver for IMX23/IMX28

[Huang Shijie]

Hi,

Thanks for your test.

> Hi,
>
> It's not really working for me.
> I've applied all gpmi-nand driver patches and the dma driver patches.
>
> I have added following kernel parameters:
> mtdparts=gpmi-nand:20m(boot),-(user) ubi.mtd=1 root=ubi0:rootfs0
> rootfstype=ubifs gpmi_debug_init
>
> During boot I get already get DMA timeout:
> [    2.560000] [ start_dma_without_bch_irq : 392 ] DMA timeout, last DMA :1
> [    3.560000] [ start_dma_with_bch_irq : 427 ] bch timeout!!!
> ...
> (see log file in attach line 89)
>
> When trying flash_erraseall /dev/mtd1 I get:
> Erasing 128 Kibyte @ 20000 --  0 % complete [   16.700000] [
> gpmi_read_data : 832 ] step 1 error
> [   16.700000] [ gpmi_send_command : 749 ] step 1 error
> [   16.700000] [ mil_cmd_ctrl : 894 ] Chip: 0, Error -1
> [   16.700000] [ gpmi_send_command : 749 ] step 1 error
> [   16.700000] [ mil_cmd_ctrl : 894 ] Chip: 0, Error -1
> [   16.700000] [ gpmi_send_command : 749 ] step 1 error
> [   16.700000] [ mil_cmd_ctrl : 894 ] Chip: 0, Error -1
> [   16.700000] [ gpmi_read_data : 832 ] step 1 error
> libmtd: error!: MEMERA[   16.740000] [ gpmi_send_command : 749 ] step 1 error
> SE64 ioctl failed for eraseblock[   16.750000] [ mil_cmd_ctrl : 894 ]
> Chip: 0, Error -1
>   1 (mtd1)
>          error 5 (Input/output error)
> flash_erase: error!: /dev/mtd1: MTD Erase failure
>               error 5 (Input/output error)
> ...
> (see log file in attach line 128 and further)
>
> Environment:
> - patches on a 2.6.39.1 kernel (needed to modify the patch a little
> for changed mtd add/del interface).
Please test the driver on :
   git://git.linaro.org/people/shawnguo/linux-2.6.git mxs-gpmi

or on

  git://git.pengutronix.de/git/imx/linux-2.6.git  imx-for-3.1



I found the .config may influence the DMA.
I guess there is some module which has impact to the DMA.
So You should use the right .config first, you can get the right
.config by two ways:
[1] use the 'make mxs_defconfig' in the imx-for-3.1 branch of
   tree: git://git.pengutronix.de/git/imx/linux-2.6.git

[2] use the attachment which is tested by me.

Best Regards
Huang Shijie



> - using this on our own mx23 based board, so also added some board
> init code for that.
>
>
> On Fri, Jul 22, 2011 at 10:07 AM, Huang Shijie<b32955 at freescale.com>  wrote:
>> Hi Wolfram:
>>> On Fri, Jul 22, 2011 at 11:30:41AM +0800, Huang Shijie wrote:
>>>> Hi,
>>>>>> The general-purpose media interface(GPMI) controller is a flexible
>>>>>> interface
>>>>>> to up to several NAND flashs.
>>>>> ...
>>>>>> 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.
>>>>>> 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.
> I don't see the DMA patch in the git?
>
>>> git://git.linaro.org/people/shawnguo/linux-2.6.git mxs-gpmi
>> Please test the GPMI driver based this git tree.
> I will try that on an mx23evk board.
>
>> 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.
> I don't see any of this in the git?
>
>> 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.
>>>
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel at lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>>

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