Ls1020a with ksz9031rnx link fault

[ser_fr]

Hello, I have a custom board with ls1020a processor connected with ksz9031rnx phy. In both modes 1000 base, 100 base, I have to repeated several times unplugging/plugging of cable to link up the interface. What can be a reason? 

Thanks

[yipingwang]

Hello Serge Frolov,

KSZ9031RNX PHY supports RGMII, please make sure LS1021a Ethernet interface is configured as RGMII.

KSZ9031RNX PHY driver drivers/net/phy/micrel_ksz90x1.c has already been integrated in u-boot, please check whether you have already configured CONFIG_PHY_MICREL_KSZ90X1 in u-boot.

Please follow the procedure in function "ksz90xx_startup" in drivers/net/phy/micrel_ksz90x1.c to check PHY link status.

Thanks,

Yiping

[ser_fr]

Thanks, Yiping!

In 100 base mode phy works good, but in 1000 base mode link faults. In ksz9031errata said, that it may be, if 125 clk_out from phy is connected to mac core. Later I checked it.

Thanks!