SES AddDevice error -1

Hi Steve,

You're right sometimes the host prevents the application in accessing the Ethernet port, so using sudo usually resolves this.

I’d like to confirm the Ethernet speed of the BeagleBone Black. The output you shared seems to indicate that it’s running at 10 Mbps.

Could you set the Ethernet speed to 100 Mbps by only advertising 100BaseT.

Also, change the host strapping of the EVAL-ADIN6310 for 100 Mbps operation?

Regards,

Karl

Karl:

Success.  Changing the strapping on the EVAL-ADIN6310 was the missing piece of the puzzle.  I had already used ethtool to force the beaglebone to 100M but it is necessary to force the ADIN6310 to 100M.  Glad I found this now and not after building my own board.  Thanks,

-Steve

Hi Steve,

Just want to highlight that forcing speed (if this means Auto-neg is disabled) on the Beaglebone side may end up with the ADIN1300 PHY on our evaluation board bringing up a Half duplex link. 

In your own design, you would likely have a MAC to MAC connection, so a forced mode on both sides in that case is exactly how you would configure.

With our evaluation boards, we have Ethernet PHYs on all ports (including host port).

For the PHY on Port 0 (host port) , this is hardware strapped to Auto-neg all speeds (10/100/1000). 

If the link partner is a forced speed (auto-neg disabled), that results in "Parallel detect" and the link established will be Half Duplex. 

This may not be what you want/intend and depending on what you are doing when testing our evaluation board, may skew behaviour, throughput etc. 

In your setup, please ensure Auto-neg is enabled, the PHYs should bring up the highest common link speed (and the switch host port strapping should be configured to match). If there's an issue with Link speed, then only Advertise 100FD. 

Hope this helps,

Best regards,

Catherine. 

Copilot did a quick summary of Parallel detect: 

Parallel detection is an Ethernet PHY feature that allows a device with auto-negotiation enabled to establish a link with a device that has auto-negotiation disabled and is operating at a fixed speed.

Catherine:

Thanks for additional insight, it all makes sense.  The BBB is a stand in while I explore the various features of the ADIN6310. The host I will be interfacing to also supports only 10/100M, so forcing everything to 100M is reasonable. We'll be sure to pay attention to this as we move forward.

(deleted my other question - I see that I should look at the ses-tsn-configuration-app for additional capabilities)

Thanks,

-Steve