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PROCESSOR-SDK-DRA8X-TDA4X: TDA4- Set/lock A72 CPU to Max frequency

Gokul Kujulva
Genius 4465 points

Part Number: PROCESSOR-SDK-DRA8X-TDA4X

Hello all

How to lock the A72 core to the max frequency?

Regards,,

Gokul

  • 0
    TI__Guru**** 162500 points

    Hi Gokul,

    TDA4VM Data sheet: https://www.ti.com/lit/ds/symlink/dra829v.pdf?ts=1602603500127&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FDRA829V

    Table: Table5-1. Speed Grade Maximum Frequency
    Page: 153

    Maximum A72 frequency supported 2 GHz.

    Boot to Linux prompt & just to k3config --cpuinfo

    You can see that CPU is already at 2GHz.


    root@j7-evm:~# k3conf --cpuinfo
    |--------------------------------------------------------------------------------|
    | VERSION INFO                                                                   |
    |--------------------------------------------------------------------------------|
    | K3CONF | (version v0.1-3-g9199c3a built Wed Jun 17 14:55:40 UTC 2020)          |
    | SoC    | J721E SR1.0                                                           |
    | SYSFW  | ABI: 3.0 (firmware version 0x0014 '20.04.1-v2020.04a (Terrific Lla)') |
    |--------------------------------------------------------------------------------|

    |--------------------------------------------------------|
    | Processor Name | Processor State | Processor Frequency |
    |--------------------------------------------------------|
    | A72SS0_CORE0   | DEVICE_STATE_ON | 2000000000          |
    | A72SS0_CORE1   | DEVICE_STATE_ON | 2000000000          |
    |--------------------------------------------------------|

    Hope this answers your question.

    Best Regards,
    Keerthy

  • 0 in reply to Keerthy J
    Genius 4465 points

    Hi Keerthy,

    How to change/lock the GPU clock to maximum frequency ?  

    Regards,

    Gokul

  • 0 in reply to Gokul Kujulva
    TI__Guru**** 162500 points

    Hi Gokul,

    Please resolve this thread if your CPU frequency question is answered. Please raise a new thread
    of GPU so that it can be assigned to the right owner.

    Thanks
    Keerthy

  • 0 in reply to Keerthy J
    Genius 4465 points

    Hi Keerthy,

    I am able to find out.

    k3conf dump clock 125 

    Thanks & regards,

    Gokul

  • 0 in reply to Gokul Kujulva
    TI__Guru**** 162500 points

    Great! Thanks gokul.

    Best Regards,
    Keerthy