topic Re: Display Replication Mode support by i.MX 8X QuadXPlus in i.MX Processors

Display Replication Mode support by i.MX 8X QuadXPlus

JK-IMX — Mon, 13 Feb 2023 17:49:51 GMT

Hi i.MX Champ !

My customer would like to implement Dual display as replication mode with MIPI-DSI and LVDS of i.MX 8X QuadXPlus.

They have tried to make dual display system using external MIPI to LVDS bridge IC.

They are developing both MIPI and LVDS to output the same camera image.
I'm looking for a way to make both displays work in replication mode, can you guide me?

According to LINUX USER GUIDE below, I can not figure out if i.Mx 8X would support the routing a same video source to multiple display mentioned in 7.3.1.6.2 even without sink feature.

ArrowElectronics_0-1676310326130.png

Please provide us with detailed guidance to enable routing a same video source to dual display via MIPI-DSI and LVDS outpus.

Thanks.

Regards,

James

Re: Display Replication Mode support by i.MX 8X QuadXPlus

joanxie — Tue, 14 Feb 2023 07:28:17 GMT

for multi display support on imx8qxp, requires the mouse navegation on these displays in order to enable it.

Re: Display Replication Mode support by i.MX 8X QuadXPlus

JK-IMX — Tue, 14 Feb 2023 13:13:52 GMT

Let me modify Display type from MIPI-DSI to LVDS.

They're going to use LVDS0 and LVDS1 in replication mode.

Is there anyway to enable it without the mouse navigation handling?

Customer wants to activate the auto start displaying with both LVDS0 and LVDS1.

Re: Display Replication Mode support by i.MX 8X QuadXPlus

joanxie — Thu, 16 Feb 2023 09:29:26 GMT

you can refer to the document as below:

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/IMX8QM-LVDS-mirror-dual-mode-reference-patch/ta-p/1121478

Re: Display Replication Mode support by i.MX 8X QuadXPlus

simhyeongjun — Thu, 16 Feb 2023 09:38:06 GMT

Thanks Joanxie !

Re: Display Replication Mode support by i.MX 8X QuadXPlus

sai9 — Fri, 18 Oct 2024 08:56:39 GMT

Hi, i am using imx8qxpc0mek and i have built the imx-image-full with L5 version of zeus branch
Connected two HDMI Display on two LVDS to HDMI Daughter Card
exported Display variable to select display
export DISPLAY=:0.0
executed Qt Appplication
./Qt5_CinematicExperience
Qt Application works on the LVDS0 Display.

changed display variable to check whether it could switch the display
export DISPLAY=:0.1
executed Qt Application
./Qt5_CinematicExperience
But unfortunately it is not working. the application still display on LVDS0 Display.

why it is still on LVDS0?