CM3+ with LT070ME0500 DSI display

  • That's a great idea.

    Today I have tried it out, but it not works. There are three problems with it:

    - 18.7 Leia is installed (I don't know how to install 19.1 Matrix)

    - KODI hangs at KODI "18.7 Leia" screen

    - RPiOS is well rotated but KODI is still at the original orientation.

    Additionally, I can also confirm that next to LE, also RPiOS hangs without HDMI connected on kernel 5.10.48.

    Edited once, last by deltasjimmy (July 12, 2021 at 7:47 PM).

    • Official Post

    You probably came to the same conclusion, so this is just for the records:

    1. Post your request at the RPiOS forum. Your chances of getting useful feedback are much better there.
    2. Make RPiOS your primary testing platform. It's easier to download tools, or compile software like Kodi on RPiOS.
    3. If you found the solution, come back, report, and there is a chance to adapt it on LE.
  • Hello guys,

    The meanwhile I have switched to a landscape mode display that is Ronbo, RB070D30.

    (Parallelly, switched to CM4IO board.)

    It has an existing Linux driver HERE.

    Unfortunately, when I activate this drivre within "/projects/RPi/devices/RPi4/linux/linux.aarch64.conf" then building the system image then

    .ko is not generated so I cannot use the display with my own dt overlay.

    Can you please help what did I wrong?

    The difference between the two display from RPi point of view is:

    LT070ME05000 driver exists in the RPi OS by default but RB070D30 not.

    Thanks for your great support again.

  • Hi again,

    Correction:

    Those *.ko files are exist here:

    ./run/kernel-overlays/modules/5.15.0/kernel/drivers/gpu/drm/panel/panel-ronbo-rb070d30.ko

    ./usr/lib/kernel-overlays/base/lib/modules/5.15.0/kernel/drivers/gpu/drm/panel/panel-ronbo-rb070d30.ko

    But still the display is dark.

    See pastekodi HERE

    These are added to config.txt:

    ignore_lcd=1

    dtoverlay=lcd_ronbo


    Here is my "lcd_ronbo.dtbo" file content, :