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AM335X RGMII with AR8035 doesn't work on 100 Mbps mode in u-boot.

gang rong
Prodigy 20 points

Hi,

     I'm now porting u-boot-2013.01.01-psp05.07.00.00 on our custom board. The AR8035's phy address is 0x04.  Now I've got a problem: RGMII works well on 1000 Mbps mode, but can't work on 100 Mbps mode.

   Can anyone give me some suggestions? Thanks.

  • 0
    TI__Mastermind 27890 points

    Hello,

    Did your board work well at both 100 and 1000Mbps prior to your software change?

  • 0 in reply to -DK-
    Prodigy 20 points

    hi, -DK-. Thanks for you reply. I have no ideal about this problem.

    Here is the detail of our LAN:

    1000/100 Mbps Router (with 4 ports)  ---> 100 Mbps ETH hub -----> PC.

    The gateway IP address is 192.168.0.1, and PC is 192.168.0.133

    1) When we connect the custom board to the router directly, the RGMII works well.  It's shown that the link type is 1000 Mbps in u-boot.  Ping and tftp works fine.

    2)When we connect the custom board to the ETH hub, It's shown that the link type is 100 Mbps in u-boot. But ping and tftp is failed always.