网卡一直up、down

cw_firefly

        rk3399 板子的eth1网口，同网段连接pc的网口，
        rk3399 板子的串口不断出现,link up,linkdown交替打印，
        pc端网卡连接就不断地连接端口,
打印如下：

[  253.019414] rk_gmac-dwmac fe300000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[  255.023238] rk_gmac-dwmac fe300000.ethernet eth0: Link is Down
[  260.033256] rk_gmac-dwmac fe300000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[  262.039426] rk_gmac-dwmac fe300000.ethernet eth0: Link is Down
[  268.051459] rk_gmac-dwmac fe300000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[  270.055209] rk_gmac-dwmac fe300000.ethernet eth0: Link is Down
rk_gmac-dwmac fe300000.ethernet eth0: Link is down
rk_gmac-dwmac fe300000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx

neutionwei

检查一下网口接触情况，或者换一根网线试一下。

cw_firefly

可能会是内核网口驱动的问题吗？

cw_firefly

[    1.583126] rk_gmac-dwmac fe300000.ethernet: clock input or output? (input).
[    1.583755] rk_gmac-dwmac fe300000.ethernet: TX delay(0x28).
[    1.584270] rk_gmac-dwmac fe300000.ethernet: RX delay(0x11).
[    1.584789] rk_gmac-dwmac fe300000.ethernet: integrated PHY? (no).
[    1.585509] rk_gmac-dwmac fe300000.ethernet: cannot get clock clk_mac_speed
[    1.586137] rk_gmac-dwmac fe300000.ethernet: clock input from PHY
[    1.591681] rk_gmac-dwmac fe300000.ethernet: init for RGMII

内核打印这个可能是什么问题导致的呢？是哪里配置需要修改吗？