Display (LVDS)
================

This guide will show you how to use the LCD Touch Displays connected to LVDS0 and LVDS1 on the phyCORE-i.MX8X development kit carrier board.

.. image:: ../../images/phycore-imx8x/pcm-065_display.webp
   :width: 800px
   :alt: LVDS Display

Requirements
--------------

* Capacitive Touch Display - LCD-018-070-KAP


Setting Up Hardware
--------------------

* With i.MX8X development kit **powered off** and with the power supply removed, connect the one or both of the displays to X49 (LVDS0) or X48 (LVDS1).

  .. note:: The display ribbon cables will point towards the center of the development kit so that the display and the kit are both right side up together.

 .. image:: ../../images/phycore-imx8x/pcm-065_display-callouts.webp
   :width: 500px


Using the Display
------------------

* Power on the development kit and stop in U-Boot.

* Load the device tree overlay needed for operating the LCD-018 display, save the environment, and boot into Linux.

  .. code-block:: none
    :caption: Target (U-Boot)

    setenv overlay_files phytec-imx8qxp-lcd-018.dtbo
    saveenv
    boot

* During the boot process you should see Tux the Penguin appear on the screen before being presented with a simple GUI demo application.

Gstreamer Pipelines
---------------------

* Gstreamer can be leveraged to place images onto the display:

  .. code-block:: none
    :caption: Target (Linux)

    gst-launch-1.0 -v videotestsrc ! autovideosink


Disabling the Display
----------------------

* Reboot or power on the development kit and stop U-Boot.

* Set the overlay_files variable to an empty state, save the environment, and boot into Linux.

  .. code-block:: none
    :caption: Target (U-Boot)

    setenv overlay_files
    saveenv
    boot