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SK-TDA4VM: How can disable the MCU1_0 reset in Linux EdgeAI

Ner Fellon
Intellectual 495 points

Part Number: SK-TDA4VM

Tool/software:

Hi,

PSDKLA: ti-processor-sdk-linux-edgeai-j721e-evm-09_02_00_05

PSDKRA: ti-processor-sdk-rtos-j721e-evm-09_02_00_05

The problem that I am facing right now with my customized SDK that I am using Boot App with Linux EdgeAi, the boot works fine and all works well except the fact that the MCU1_0 is reset by Linux.

My question: How can I disable in thew Linux device tree the MCU1_0 reset?

Regards,
Tamas

  • 0
    TI__Guru**** 170910 points

    Tamas,

    Linux is running on the A72 and it controls the SoC. So a linux reset is treated as a SoC reset. MCU also gets reset.

    This is the desired behavior in the SDK. If only A72 is reset then MCU has no clue to load the HLOS again.

    Best Regards,

    Keerthy 

  • 0 in reply to Keerthy J
    Intellectual 495 points

    Hi Keerthy,

    I wasn't more specific. I am using a customized RTOS boot, the boot app from RTOS. Boots everything fine. 
    My problem is, that the Linux when boots up (Linux is the last one core that boot in, other cores are up and waiting for HLOS) resets the power of the MCU1_0 processor. I want to disable this! 

    Could you help me? 

    Regards,
    Tamas

  • 0 in reply to Ner Fellon
    TI__Guru**** 170910 points

    Tamas,

    That's not expected. MCU1_0 in the default boot flow runs the device manager software and does not get reset by Linux. 

    Best Regards,

    Keerthy