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imx8mqevk hdmi use

Question asked by Richard Earle on Sep 4, 2019
Latest reply on Sep 6, 2019 by igorpadykov

Hello:

I'm using an imx8mqevk and have successfully built a Linux Yocto image based on imx-linux-sumo with imx-4.14.78-1.0.0 with the Wayland backend. 

Using the HDMI to a pc monitor, everything boots as expected. I now wish to change the display to a 1280x800 TFT  display module. 

I have modified uboot's mmcargs to include the displayinfo variable as recommended in the i.mx Linux users's guide and confirmed the 1920x1080M@60 settings continue to work for the pc monitor.

It's unclear what the settings should be to support the 1280x800 TFT panel. If this is the correct approach, can you please supply the proper video settings for the displayinfo as they don't seem to exist in the i.MX Linux release notes.

I also just discovered the i.MX8MQ EVK Display Selection Guide, where if I'm interpreting things correctly, I will need to drive the 1280x800 over the MIPI-DSI HDMI display adapter. Could you please clarify / confirm - thanks

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