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ZedBoard Hardware Design 2nd Ethernet int to connect PS and PL vai GMII
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2nd Ethernet int to connect PS and PL vai GMII

Former Member
Former Member over 11 years ago

I redirected Ethernet 1 to PL according to this article http://zedboard.org/content/redirecting-peripherals-mio-emio

But I suppose it is not enough. It's necessary to modify Linux device tree and
1. add definition of the Ethernet 1 (it's simple)
2. tell Ethernet controller to get Rx/Tx clocks from EMIO - I do not have any idea how to do it.

Can you help with it?

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  • Former Member
    0 Former Member over 11 years ago

    Xilinx provides references how to use define clock sources in Device tree. But my knowledge is not enough to add necessary definitions.
    https://github.com/Xilinx/linux-xlnx/blob/m...k/zynq-7000.txt
    https://github.com/Xilinx/linux-xlnx/blob/m...fixed-clock.txt
    https://github.com/Xilinx/linux-xlnx/blob/m...ck-bindings.txt

    Much appreciate some help.

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  • Former Member
    0 Former Member over 11 years ago in reply to Former Member

    The links in your post did not work for me so I am not sure what your references are.

     

    But you should not need to define your GMII clock source in the device tree. If your IP is emulating the PHY interface to the Ethernet MAC GMII interface your IP just needs to provide the clock source that a PHY would normally provide.

     

    -Gary

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  • Former Member
    0 Former Member over 11 years ago in reply to Former Member

    The links in your post did not work for me so I am not sure what your references are.

     

    But you should not need to define your GMII clock source in the device tree. If your IP is emulating the PHY interface to the Ethernet MAC GMII interface your IP just needs to provide the clock source that a PHY would normally provide.

     

    -Gary

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