? 2011?08?02? 16:12, Shawn Guo ??:

On Tue, Aug 02, 2011 at 02:19:56PM +0800, Huang Shijie wrote:

quoted

Hi,

quoted

On Fri, Jul 29, 2011 at 11:49 AM, Huang Shijie[off-list ref]   wrote:

quoted

? 2011?07?29? 15:40, Koen Beel ??:

quoted

Hi,

On Fri, Jul 29, 2011 at 9:20 AM, Lothar Wa?mann[off-list ref]
  wrote:

quoted

Hi,

Koen Beel writes:

quoted

Hi,

I have test on mx23evk board. Still see the same issues.

On Wed, Jul 27, 2011 at 3:53 AM, Huang Shijie[off-list ref]
  wrote:

quoted

Hi,

Thanks for your test.

quoted

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)

I still see this DMA timeout when booting.
What kernel parameters do you use? I still use same as above.

Do you have an SD card in the system? I'm getting the same error when
accessing an SD card. Without SD card I can use the flash without any
errors.

No SD card in the system. At least not on my mx23evk board.
My real target hardware has a SDIO wifi chip.

Does it conflict with the GPMI?

Well I don't know if it conflicts. From what Lothar says I assume
there might be a conflict between gpmi and sdio.

Yes, the conflict between gpmi and other module(such as SD in MX6Q)
is THE prime reason
which caused the DMA timeout.

I am debuging the IMX6Q now, and meet the same problem.

I do not follow on this.  SD on i.mx6q does not use apbh-dma at all.
How will it conflict with gpmi regarding to dma timeout?

The SD shares the same lines with GPMI, such NANDF_WE/NANDF_RE, 
NANDF_ALE, NANDF_CS0.
If the SD card is working, the GPMI will not.


Huang Shijie