On Tuesday 08 June 2010 12:24:34 pm Bastian Ruppert wrote:
> Hello Caglar,
> 

Hello,

[...]

>  
> I can communication in this situation with an i2c device on an attached
>  custom hardware via i2ctools.
> Without the custom hardware the error is still existing.

So same kernel can communicate with another I2C but not with tps6507x...

> Running another kernel (url =
> git://arago-project.org/git/people/sekhar/linux-omapl1.git
> on commit d1aeb54a603514d7757c0b88da57f23e498eeacc )
> the touchscreen is working on the same hardware.
>  

I couldn't find any references to those commit in linux-omapl1, maybe you have 
local changes in your tree? 

Anyway, by looking at the linux-omapl1 sources, I see that it uses bitbanging 
i2c driver not the DaVinci I2C driver. OTH linux-davinci, which I assume is 
other tree that you are trying, uses DaVinci I2C driver. This suggests that 
I2C hardware on your EVM is not working correctly.

Best regards,
Caglar

> Any ideas are very welcome, thank you very much
>  
> regards,
>  
> Bastian.
> 
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