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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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    The note just explain how to redirect signals.
    According to the figure 25-7, section 25.6.2 of the Technical Reference Manual Tx and Rx clocks have 2 possible inputs each (from MIO anf EMIO) trough programmable multiplexer.
    As I understand Ethernet controller by default gets clocks from MIO and switch it to EMIO registers GEM0_RCLK_CTRL and GEM0_CLK_CTRL should be written with new values (Appendix B: Register Details).

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    The note just explain how to redirect signals.
    According to the figure 25-7, section 25.6.2 of the Technical Reference Manual Tx and Rx clocks have 2 possible inputs each (from MIO anf EMIO) trough programmable multiplexer.
    As I understand Ethernet controller by default gets clocks from MIO and switch it to EMIO registers GEM0_RCLK_CTRL and GEM0_CLK_CTRL should be written with new values (Appendix B: Register Details).

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