Dear Robert,

Thanks for you reply. The board is the same as beaglebone black without 
HDMI part. I used DDR3 but about your question which is BBB clone and BBW 
.. I do not know, I am quiet new in this area. Please tell me more if it 
possible. thanks.

Regards,
Masoud 

On Monday, May 2, 2016 at 5:14:46 AM UTC+4:30, RobertCNelson wrote:
>
>
>
> On Sun, May 1, 2016 at 4:44 AM, masoud hajian <[email protected] 
> <javascript:>> wrote:
>
>> Hello,
>>
>> I have implemented my new AM335x board recently which most of my 
>> schematic is the same as beaglebone black. The board eeprom is empty and at 
>> the boot moment I face these errors:
>>
>> U-Boot SPL 2014.07-rc4-00015-g5bcd74d (Jul 04 2014 - 16:03:33)           
>>        
>> Incorrect magic number (0xffffffff) in EEPROM                             
>>       
>> Could not get board ID.                                                   
>>       
>> Incorrect magic number (0xffffffff) in EEPROM                             
>>       
>> Could not get board ID.                                                   
>>       
>> Unknown board, cannot configure pinmux.### ERROR ### Please RESET the 
>> board ### 
>>
>> How can i write on eeprom at boot time? is there any specific tools for 
>> writing appropriate ID in that?
>> Please help with is issue...
>>
>
> Is this a BBB clone or a BBW clone? aka ddr3 or ddr2?
>
> Regards,
>
> -- 
> Robert Nelson
> https://rcn-ee.com/
>

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