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Setting MPU clock speed in x-loader for AM3715

Chris Deas
Prodigy 30 points
Other Parts Discussed in Thread: AM3715

Hi

How can I setup the MPU clock rate to 1GHz in the x-loader board initialisation code? I gather I need to modify some values used in the function "void prcm_init(void)" to reconfigure the PLL's. But what changes should I make or where can I find info for calculating PLL config values.

I want to do it in bootloader as we dont wish to have frequency scaling or smartreflex enabled on our kernel.

Thanks

Chris

  • 0
    TI__Expert 6655 points

    Hi Chris,

    AM35x TRM section "4.7.6 DPLL Control" have the details of DPLL1 (MPU) configuration (same document applicable to AM3715).

    In x-loader after this line "/* MPU DPLL (unlocked already) */" you have to change the M, N and etc values.

    Regards

    AnilKumar

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