The Ethernet link between my ZCU102 board and a host machine at 100M/Full does not work. The link keeps going up and down:
[ 289.532997] macb ff0e0000.ethernet eth0: unable to generate target frequency: 25000000 Hz
[ 289.541083] macb ff0e0000.ethernet eth0: link up (100/Full)
[ 295.542950] macb ff0e0000.ethernet eth0: link down
[ 297.543012] macb ff0e0000.ethernet eth0: unable to generate target frequency: 25000000 Hz
[ 297.551100] macb ff0e0000.ethernet eth0: link up (100/Full)
[ 299.552951] macb ff0e0000.ethernet eth0: link down
In PetaLinux 2015.4, 2016.1 and 2016.2, dynamic speed switching is not possible. Only the default speed of 1G is supported.
This is NOT a silicon or board limitation but a Linux infrastructure (to enable dynamic speed switching) being under development and not ready yet.
Work-around:
Configure the host machine to "Auto-negotiation" or "1G/Full".
This is (tentatively) planned to be fixed for the 2016.3 release.
| AR# 66553 | |
|---|---|
| 日期 | 07/01/2016 |
| 状态 | Active |
| Type | 综合文章 |
| 器件 | |
| Tools | |