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regarding cpu frequency and cpu load

Yugandhar Mothukuri
Prodigy 50 points

Hi,

I am using VAYU-EVM (TDA2xx) development board, running TI-GLSDK. TDA2xx-evm has dual core Cortex-A15 ( max frequency is 750Mhz) processor.

I queried the current cpu frequency while each core is fully loaded. The result is 1500000 (1.5 Ghz) for both cores with 50% load on each CPU as shown in below snapshot.

Is 50% of load while running with 1.5Ghz mean each core is running with 750Mhz frequency (that is 50% of 1.5Ghz)? (OR) Is each cpu core running with 1.5Ghz frequency?
       
Thanks,
Yugandhar.
  • 0
    TI__Guru**** 161600 points
    Hi,

    The cpuinfo_cur_freq shows the frequency of each CPU core. So in your case each cpu is running @1.5 GHz.

    Best Regards,
    Yordan
  • 0 in reply to Yordan Kovachev
    TI__Expert 4230 points
    Hi Yugandhar,

    GLSDK release doesnt support TDA2xx device and is not tested on the same.

    SInce TDA2xx based on J6 device, it works as is but you need to modify the U-Boot and Kernel (dts) to provide correct Operating performance points (OPP- frequency and voltage) as per Data manual.

    As you havent update the OPPs as per data manual you are forcing each A15 core to run 1.5GHz whihc is the J6 /DRA7xx device configuration.

    Note that you are running device out of spec'd operating conditions which could lead to non-repairable damage to the device.

    I recommend you seek help in configuring teh OPPs as per data manual otherwise you'll damage the device.

    Regards,
    RK