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AM3358: Request for Help to Change MPU Clock Frequency

Randy Holmberg23
Intellectual 330 points

Part Number: AM3358

Hello,

I would like some guidance on how to change MPU Clock frequencies for the AM3358. We are using a Windows Embedded Compact 2013 Board support package that does not seem to have made the clock setup very clear for us. Please let me know if you have the register settings for some of the supported clock frequencies (ie 600, 720, 1000 Mhz) in one of the Linux board support packages or something you would be willing to send my way.

Thank you,

Randy Holmberg

  • 0
    TI__Guru 64495 points

    I reached out to our Linux software team and ask what they could provide as an example.

    I was told TI doesn't directly support Windows CE, only Linux or RTOS.  You may have already known this and the reason you are asking for example code. I was also told the Linux code changing MPU clock is under a complex DVFS (CPUFREQ) framework, where it interacts with runtime suspend/resume and CPUIdle frameworks, so any references to this code would point to tens (if not hundreds) of C files in Linux with no easy way for non-Linux customers to follow it as an example.

    Regards,
    Paul

  • 0 in reply to peaves
    Intellectual 330 points

    Looks like someone asked a similar question regarding the AM33359 with RTOS where they had provided enough sample code to show the PLL register settings for OPP100. That example should be sufficient for our software folks to figure out how to do what we need to in our Windows BSP environment.