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Max clocks

MATT GESSNER
Expert 1435 points
Other Parts Discussed in Thread: AM3517

If I'm running with the sys clock at 26MHz, what are the settings I should use to get the fastest clocks for my peripherals?

The Logic PD code isn't making sense.  They reference a 52MHz clock that doesn't exist.  Since DPLL4 is either DPLL3/2 or DPLL3/1 and they're stating that they've set DPLL3 to 166 Mhz, the 52MHz clock is not there.

Thanks,

Matt

  • 0
    TI__Expert 8180 points

    Which device are you referring to here? but, 52MHz sys_clk doesn't make look realistic to me. Usually the device supports, 12MHz, 13MHz, 19.2MHz, 26MHz and 38.4MHz, you may want to cross-check it again.

     

    Also. You can refer to the x-loader code for DPLL configuration, which does support all supported clock inputs.

    http://arago-project.org/git/projects/?p=x-load-omap3.git;a=summary

    For AM3517 - refer to the file board/am3517evm/am3517evm.c file and funtions "prcm_init. (M/N value is defined in platform.S)

    For AM3517 - refer to the file board/omap3evm/omap3evm.c file and funtions "prcm_init. (M/N value is defined in platform.S)

     

    Thanks,

    Vaibhav