IMX8MQ dual screen display issue

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IMX8MQ dual screen display issue

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ximenbingmeng
Contributor III

Hello, we would like to inquire about the following two questions regarding dual screen display screens based on the IMX8MQ chip. Please reply.Thanks.
When the HDMI screen and MIPI screen of the IMX8MQ chip are used simultaneously, can the MIPI screen play animations? Can the QT interface be displayed? Can both MIPI and HDMI be connected to the DCSS controller?
I have now connected the MIPI-DSI interface to the LCDIF controller and the HDMI interface to the HDMI controller; The test result shows that MIPI can play animations, which does not match the manual description. Please help confirm the reason.
The description on page P4525 of the reference manual "IMX8MDQLQRM-Rev0. pdf" is as follows:

ximenbingmeng_0-1719471039239.jpeg

2. The current lighting effect is shown in the attachment. Is this the default function of BSP?Can the IMX8MQ chip enable HDMI to display other touchpoints and lines when displaying the QT interface on MIPI screens,
And while the MIPI screen can be controlled, the HDMI screen can also be controlled, and both sides can be operated by touching simultaneously;
Looking forward to your reply, thank you very much!

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Bio_TICFSL
NXP TechSupport
NXP TechSupport

Hello,

Yes MIPI and HDMI must works simultaneous but that depend on your display, check the pixel clock in device tree maybe this can help.

Regards

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