Multi-Display guide

Supported product

• TEP-IMX8MP

Precondition

1. Plug in secondary display on product
2. Set device tree overlay table on u-boot prompt
   We have auto panel detection on technexion's panel ( LVDS and vizionpanel).
   During u-boot, system will set device tree overlay setting automatically.
   Please make sure there are two panel on dtoverlay setting.
   Example:

   u-boot=> setenv dtoverlay lvds-vl156192108 vizionpanel-vl10112880
   

Multi-Display application

1. open MD Launcher application
   
   
   

2. Select which display that you want to open other application

   
   Note: If didn't select any display, displays will keep sync mode.

   
   
   Example: play video on secondary display
   

Async touch

Refer input-port-associations.xml to binding display and touch.
Example: device/nxp/imx8m/<product>/input-port-associations.xml

<ports>
	<port display="0" input="usb-xhci-hcd.1.auto-1.3.1/input0" />
	<port display="1" input="3-002a/input0" />
   ...
</ports>

Set primary display

Default primary display is LVDS panel on TEP-IMX8MP product.
Specific your display connect type into persist.vendor.hwc.device.primary property.

setprop persist.vendor.hwc.device.primary LVDS

List connect type:

ls /sys/class/drm