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AM623: The OLDI driver does not support Clone Mode at present?

li weiyu
Expert 1150 points

Part Number: AM623

For SDK 12_00_00_07_04, does this version of DSS no longer support clone mode? Will subsequent versions support clone mode?
img_v3_02116_2012f0f6-668c-4b28-b2b5-497b1ae3d46g.jpg

  • 0
    TI__Genius 15640 points

    Hi Li,
    Yes, this version onwards, cloned mode not be supported due to some driver changes, since earlier implementation for cloned mode was hacky and not upstreamable. The Linux DRM framework currently does not support multiple CRTCs linked to same plane due to which cloned mode support has been removed from driver. 

  • 0 in reply to Divyansh Mittal
    Expert 1150 points

     Will subsequent versions support clone mode?

  • 0 in reply to li weiyu
    TI__Genius 15640 points

    Hi Li,
    Until the DRM supports this, cloned mode will not be supported.
    Can you please detail your usecase, how this change affect it? Are you migrating from an older SDK to new one, or starting development on the latest one?

  • 0 in reply to Divyansh Mittal
    Expert 1150 points

    We have migrated from the old SDK to this latest SDK. The old SDK supports clone mode, and our board has two screens connected. Using clone mode, the screens can display the same content. However, in this latest SDK, we can only use one of the screens to display because our hardware has been designed for a long time

  • 0 in reply to li weiyu
    TI__Genius 15640 points

    Hi Li,
    We can try creating a patch by reverting this 50f4cd60591b50f4cd60591b commit. You may try at your end, if you need, I can try at my end and revert by mid-next week.

  • 0 in reply to Divyansh Mittal
    Expert 1150 points

    Can you create a patch file based on the following commit？

    commit c214492085504176b9c252a7175e4e60b4b442af (grafted, tag: cicd.master.202603261656)
    Author: Sabeeh Khan <sabeeh-khan@ti.com>
    Date: Thu Mar 26 14:02:52 2026 -0500

    TI: HACK: drivers: bluetooth: btti_uart: remove serdev_set_rts troublesome functions

    It is believed that these set_rts functions are not functional in the kernel.
    Remove these for now from the btti_uart driver until the true fix can be identified.

    Signed-off-by: Sabeeh Khan <sabeeh-khan@ti.com>

  • 0 in reply to li weiyu
    TI__Genius 15640 points

    Hi Li,
    Okay, please wait until next week for me to test this.

  • 0 in reply to Divyansh Mittal
    TI__Genius 15640 points

    Hi Li,
    Thanks for waiting.
    Please find the below patch and let me know if it works at your end. I do not have SL-OLDI ports at my EVM to test it.
    https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/791/0001_2D00_HACK_2D00_Enable_2D00_cloned_2D00_mode_2D00_SL_2D00_OLDI_2D00_on_2D00_12_5F00_0.patch

    Currently, we do not have plans to maintain this even as a downstream patch.
    Can you please share your usecase of having cloned OLDI display so we can file this as an internal requirement.