Reset button on PicoCore i.MX8ULP base board does nothing

    There are two reset buttons on the base board: T10 and T12. Both of them pulls line RESET_IN to the ground. This shoud reset CPU on PicoCore board as I guess but... does nothing. CPU remains work properly in despite of level on RESET_IN line (at least it doesn't affect Linux).


    That is wrong with RESET signal?

    Hi paullegart ,


    The reset is controlled by the PMIC.

    A reset occurs after holding the reset button for up to 10 seconds.


    The times can be programmed in the PMIC.


    Hope this answer helps.

    F&S Elektronik Systeme GmbH
    As this is an international forum, please try to post in English.
    Da dies ein internationales Forum ist, bitten wir darum, Beiträge möglichst in Englisch zu verfassen.

    Unfortunately, it is not possible to reset the Cortex-M separately via the hardware.


    If an external reset is triggered via RESET0_b of the processor, all domains of the processor are always reset.


    Nevertheless, it is possible to perform an internal reset.

    The following reset sources are available for this.


    Watchdog timer (WDG)

    - Software (SW)

    - Clock Generation and Control(CGC)

    - Reset Acknowledge Timeout (RSTACK)

    - Lower Power Acknowledge Timeout (LPACK)

    - Lock Up (LOCKUP)

    - RT Domain (RT), a source of AD reset

    - AP Domain (AP), a source of RTD reset

    - uPower (uPOWER)

    - Security (SECURITY)

    - Tamper Detect (TAMPER)

    - Debug Port (DAP)

    - JTAG

    F&S Elektronik Systeme GmbH
    As this is an international forum, please try to post in English.
    Da dies ein internationales Forum ist, bitten wir darum, Beiträge möglichst in Englisch zu verfassen.