Hi,

I have 10 boards (newest rev. C). When I use some older Ubuntu with Ubuntu 
and kernel Linux arm 3.13.6-bone7 eth0 is detected on one of the ten. When 
I use the pre-configured image with Debian and kernel Linux beaglebone 
3.8.13-bone47 the eth0 is there all the time.

Strange.  

Am Samstag, 13. Dezember 2014 17:02:56 UTC+1 schrieb Karl Karpfen:
>
> 2014-12-12 17:10 GMT+01:00 <[email protected] <javascript:>>:
>>
>> The topic starter there reported that a reboot via watchdog didn't work.
>>
>
> I tried the same (from within a bare-metal application) and noticed the 
> same. Once the PHY is in this state also a watchdog-triggered reset does 
> not help, my software was trapped in an endless loop where only toggling 
> power did help.
>
> And the thread I linked earlier confirms this.
>
>
>> Another idea: the TPS65217C data sheet 
>> <http://www.ti.com/lit/ds/symlink/tps65217.pdf> describes various ways 
>> to perform the "power up sequence" (page 18), and it can be done from 
>> ACTIVE state too, by setting the SEQUP bit of the SEQ6 register to 1. I'm 
>> trying to understand now, whether this can cause a processor power cycle 
>> (and thus, drive the nRESETIN_OUT low), because some power rails are not 
>> affected by the "power up sequence".
>>
>
> Hm, I checked this manual some time a go and did not find such a 
> possibility. May be I have overseen this, at least it worth's a try!
>
> Karl
>
>  
>

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