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SN65DSI86: How to connect the display node to sn65dsi bridge

cyriac toms
Prodigy 130 points
Part Number: SN65DSI86

Tool/software:

The Mipi dsi connection with sn65dsi is done now the sn65dsi need to identify the panel node its connected with it need to identify the display through edid any devicetree configuration need to be done for the sn65dsi out.

hpd and aux is working aux is trying to detect the dsiplay but its not finding the one. any solution for this.

  • 0
    TI__Guru 66840 points

    Hello, 

    Due to US public holiday, support will resume on Tuesday, September 2nd. Thank you for your patience. 

    Regards, 

    Logan

  • 0 in reply to Logan Cummins
    TI__Mastermind 23040 points

    Hi Cyriac,

    For programming the DSI86 please see the response in the other E2E thread: SN65DSI86: sn65dsi86 and mipi dsi connection error 

    Please make sure to follow the initialization sequence and DSI configurations from the source should be done accordingly.


    For the EDID, you can either read EDID using the steps shared in the datasheet "8.4.5.3 I2C-Over-AUX" section. 

    If the panel's EDID is known, then you can use the calculator tool (for the DSI86, shared in the E2E thread linked above) to enter the EDID and generate the register settings.

    However, if this system will only be connected to one specific display (with known display timings), the simplest way to program would be using the display timings. You can enter the display timings to the calculator tool to generate the DSI86 register settings. The SoC/ source MIPI DSI timings, resolution and DSI settings can then be done to match these timings. This way, it will not be necessary to read the EDID. 

    For the AUX, please follow the schematic shared in the datasheet and EVM User Guide to connect to the display DP AUX.

    Best regards,
    Ikram