Date | Owner | Revision | Notes |
|---|---|---|---|
| Alvaro Karsz | 1.0 | |
Table of Contents | |||
Background
Following SolidRun’s PCN on i.MX6 SOM Rev 1.5 migrating to Rev 1.9 and Rev 2.0, this article explains the qualification procedure that SolidRun performed to make sure the performance of Analog Devices ADIN1300 PHY is adequate and no performance / quality / stability issues are affecting any customer.
Auto negotiation (A/N) test
ethtool was used to select the speed with A/N on.
1Gbps
$ ethtool -s eth0 speed 1000 duplex full autoneg on [ 8548.041399] fec 2188000.ethernet eth0: Link is Down [ 8551.757596] fec 2188000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
100Mbps
$ ethtool -s eth0 speed 100 duplex full autoneg on [ 8617.585894] fec 2188000.ethernet eth0: Link is Down [ 8620.397596] fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
10Mbps
$ ethtool -s eth0 speed 10 duplex full autoneg on [ 8648.151779] fec 2188000.ethernet eth0: Link is Down [ 8650.557544] fec 2188000.ethernet eth0: Link is Up - 10Mbps/Full - flow control rx/tx
Stress test
Stress test using iperf for 30min.
$ iperf3 -c <iperf server IP> -t 1800
Cable length [m] | Speed [Mpbs] | Packet loss [%] |
50 | 1000 | 0 |
50 | 100 | 0 |
3 | 1000 | 0 |
3 | 100 | 0 |
Thermal
Max. temperature in PHY (Poly 1): ~71 °C.
Max. temperature in the SOM (Poly 3): ~75°C in SoC.
Thermal snapshot was taken after a weekend long iperf, without a heat-sink.
Conclusion
Based on SolidRun’s short and long term tests, we find that Analog Devices ADIN1300 ethernet PHY meets the requirements of the datasheet and SolidRun did not observe any packet loss, stability, reliability or thermal problems.