? 2011?07?29? 23:00, Koen Beel ??:

On Fri, Jul 29, 2011 at 2:41 PM, Lothar Wa?mann[off-list ref]  wrote:

quoted

Hi,

Koen Beel writes:

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.

Are you also testing on the mx23evk board? Really strange it is not
reproducible here then.
Anyone using mx23evk please give:
- revision number of board (I have tested on rev C1)
- kernel parameter used (see previous mail for mine)

It's getting ever more strange. I only have problems with concurrent
access to the flash and SD-card when I do file system based accessed
to the SD card.
A 'dd if=/dev/mmcblk0 of=/dev/null' while excessively using the flash
works well, while mounting the SD card and doing an 'ls' produces
immediate BCH DMA timeouts.

Perhaps someone can make anything out of that.

I have checked and the function dma_irq_callback is never called
during my tests. This means the DMA transfer does not even works once.

If the GPMI do not work well, it will not toggle the DMA to work, so the 
DMA may timeout.



Huang Shijie

Also no clue here ...

quoted

Lothar Wa?mann
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