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How to change defaults values of hardware registers?

Former Member

Hi.
I would like to change default FCLK and Ethernet clock source.
I need to set FCLK to 125 MHz and Ethernet clock source to EMIO.

What is the right way to do it? How can I check my new setting after Zedboard boots up?

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    Gary,
    here is description of what I'm trying to do.
    1. I have Zedboard.
    2. I have my own IP core which uses GMII interface to send/receive data. Standard IP/UDP packets are used.
    3. I'd like to redirect signals of Eth controller to PL so make a connection between PS and PL via GMII.

    I tried to just redirect signals according to this note http://zedboard.org/content/redirecting-peripherals-mio-emio

    But I doesn't help. I see packets from PS (linux) but PS (linux) doesn't see packets from my core.
    I suppose the problem is that Eth controller is still using clocks from PHY. So I'm trying to tell Eth controller to use clocks from EMIO.

    I would very appreciate if you help me with this problem.

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  • 0

    Gary,
    here is description of what I'm trying to do.
    1. I have Zedboard.
    2. I have my own IP core which uses GMII interface to send/receive data. Standard IP/UDP packets are used.
    3. I'd like to redirect signals of Eth controller to PL so make a connection between PS and PL via GMII.

    I tried to just redirect signals according to this note http://zedboard.org/content/redirecting-peripherals-mio-emio

    But I doesn't help. I see packets from PS (linux) but PS (linux) doesn't see packets from my core.
    I suppose the problem is that Eth controller is still using clocks from PHY. So I'm trying to tell Eth controller to use clocks from EMIO.

    I would very appreciate if you help me with this problem.

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