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SmartReflex on DM3730EVM

Kanae
Guru 10085 points
Other Parts Discussed in Thread: DM3730

I would like to know about SmartReflex on DM3730EVM.
Is SmartReflex supported CPU clock; 1GHz?
Because the error message was appeared on the following setting.

- CPU clock of DM3730EVM is 1GHz.
- SmartReflex of VDD1 is enable.

 # echo 1> /sys/power/sr_vdd1_autocomp
 OPP4 doesn't support SmartReflex


When CPU clock is 800MHz, there was no error message.
And the SmartReflex of VDD1 could be enable.
If it supports CPU clock; 1GHz, how does it change the setting
to be enable SmartReflex?

Regards,
Kanae

  • 0
    TI__Genius 16690 points

    The SmartReflex is the requirement for OPP1G operation in DM3730. I'll check it with the PSP team.

  • 0 in reply to kshin
    Guru 10085 points

    Hi. Thank you for your support.
    I could set Smartreflex for OPP1G by updating DVSDK 4.01.

    Farthermore, I would like to know how to check that SmartReflex works.
    My customer check the voltage of VDD_MPU_IVA and VDD_CORE.

    Result;
    When SmartReflex is enable by following commands,
    the voltage get down 10-20% at a start-up,however
    the voltage does not change with getting a load on DM3730
    such as a tempareturechange, starting applications and so on. 

    echo 1>   /sys/power/sr_vdd1_autocomp
    echo 1>   /sys/power/sr_vdd2_autocomp
     
    I suppose that SmartReflex technologies dynamically control voltage,
    frequency and power based on device activity.
    Is the avobe result technically correct?

    I am not sure which forum is the best to post thie kind of question.
    If it is not here, pleaselet me know the forum I should post.

    Regards,
    Kanae

  • 0 in reply to Kanae
    TI__Genius 16690 points

    kanae said:
    the voltage get down 10-20% at a start-up

    This is correct behavior. it's adjusted to optimum voltages for your silicon performance and temperature. 

    kanae said:
    I suppose that SmartReflex technologies dynamically control voltage,
    frequency and power based on device activity.
    Is the avobe result technically correct?

    This will be done by DVFS not AVS.