i.MX 8M Plus PEVK - Driving LCD Panel Not Working

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i.MX 8M Plus PEVK - Driving LCD Panel Not Working

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drussell
Contributor I

While I am not new to linux, I am fairly new to embedded linux, and have no past experience with getting displays up and running (all headless up to now). I have recently been assigned to a project in which I need to connect a display to the i.MX 8M Plus PEVK development kit. The display is a SHARP LSO29B3SX06A (https://www.panelook.com/LS029B3SX06A_Sharp_2.9_LCM_overview_43937.html). The catch is that this display has an HDMI to MIPI adapter attached. I cannot find the exact device, but it is similar to this one (https://www.displaymodule.com/products/display-adapter-driver-board-for-hdmi-to-mipi-dsi?srsltid=Afm...).

The i.MX 8M development board connects to a monitor just fine, and I can connect the hdmi-to-mipi adapter to a windows laptop and this works fine. In addition, I can connect the hdmi-to-mipi adapter to a raspberry pi 5 and this works fine. However, when I connect to the i.MX 8M development kit, I get dmesg output as follows:

 

imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops)

imx-drm display-subsystem: bound imx-lcdifv3-crtc.1 (ops lcdifv3_crtc_ops)

imx-drm display-subsystem: bound imx-lcdifv3-crtc.2 (ops lcdifv3_crtc_ops)

 

and then later:

imx-drm display-subsystem: [drm] Cannot find any crtc or sizes

 

The above message is displayed over and over.

I am about a week in and no further along. Please help!

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joanxie
NXP TechSupport
NXP TechSupport

the HARP LSO29B3SX06A is mipi display which can connect imx8mp mipi dsi port, right? refer to your description, do you connect this display with imx8mp via hdmi-to-mipi converter?  so you connect this display with hdmi port? if yes, what pixel clock do your display need? you need to check the data sheet, I couldn't open your link, current bsp couldn't support all of display, you need change something 

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