System Control Buttons
=======================

The phyCORE-i.MX7 development kit provides a selection of buttons to perform power related functions.

.. image:: ../../images/phycore-imx7/pcm-061_cont-button.webp
  :width: 600px


.. list-table:: Button Functions
   :header-rows: 1

   * - Button
     - Description
     - Details
   * - S2
     - System Controller

       * Hard power down with long press
       * Power up if system powered down
     - **Long Press** : Holding the power button for a 'long press' while the phyCORE-i.MX7 is in the **RUN mode** will transition the module to the low power SNVS mode.

       **Short Press**: When in **SNVS mode**, a short press of the button will transition the phyCORE-i.MX7 back to RUN mode and turn ON the board.
   * - S3
     - Reset
     - Either pressing the S3 reset button or triggering a software reset via the X_nWDOG_RST pin will result in the supervisor asserting X_PMIC_PWRON, which will in turn power cycle the PMIC and cause a reset by cycling power to the processor.