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SN65DSI84: Tooling setting

Shu-Cheng LIN
Guru 11785 points
Part Number: SN65DSI84

Hi Sirs,

Sorry to bother you.

We would like to turn on panel, the spec as below

Could you help teach us how to setting DSI84 tooling?

Our input send information as below, could you help teach us how to sign in data on red circle?

For now, our panel only can show 100M, 44.033pps , we would to show 60 pps. Is any setting error?

Thanks for your reply.

  • 0
    TI__Mastermind 18655 points

    Hello Shu-Cheng LIN ,

    Verify that timing configuration provided by the DSI video source (APU) is also correct per the

    recommendation generated by the DSI Tuner tool.

    Example:

    Video input timing, register configuration and the panel timing requirements all have to match up for

    video streaming to work without errors.

    The DSI8x does not realign timing. The line time (horizontal sync to the next horizontal sync timing from

    the APU) on the input is preserved when outputting onto the LVDS interface. If the line time is different

    from what is calculated by the tool, this will cause issues. Even if the DSI source is outputting streams in

    a burst manner, it is important for the DSI source to fill in the rest of the line time with blanking packets

    (or LP11) to meet the line time requirement.

  • 0 in reply to Joel Jimenez0
    Guru 11785 points

    Hi Joel,

    Thanks for your reply.

    Actually we would like to know how to use this tooling to turn on the panel.

    For example, 

    If we saw AUO panel (Pic 1) spec and  would like turn on by tooling,  how could we setting on pic 2, 3?

    And how to setting on CPU side (Pic 4)? have a format can reference?

     

  • 0 in reply to Shu-Cheng LIN
    TI__Mastermind 18655 points
    Hello Shu-Cheng LIN,
    You are correct on the DSI Tuner configuration. In the other hand, your processor should be configured to output a DSI Clock of 350MHz. The blanking parameters in your code seems correct, just confirm the actual line time is 15.214us.
    Please, scope the DSI data and verify that the time line (horizontal sync to the next horizontal sync timing from the APU) is actually 15.21us.
    Regards