SN65DSI86: Question about sn65dsi86

Part Number: SN65DSI86

Tool/software:

Hello:

There is a problem when customer uses sn65dsi86

Problem phenomenon: There is a probability of flashing color bars at the bottom when the screen is lit up
1. After powering on and initializing the sn65dsi86, the screen will light up with a probability of flashing color bars at the bottom; After the screen is turned off and the power is turned off, there is still a probability that this abnormal phenomenon will occur again when the sn65dsi86 is powered on again;
2. The port output by mipi is the required port parameter for the screen;
3 htotal :2426 vtotal:1649,60Hz ; Single port, 4-lane
How should abnormal phenomena be eliminated? What is the reason for the occurrence? Thanks!!!

  • Hi Jimmy,

    1. When the system is working as expected, is there correct display output?

    2. Please check whether the datasheet initialization sequence is followed, including enabling the output, link training procedure, and DSI settings.

    3. With test pattern mode, is there the display output correct as expected?

    4. Are there any errors shown on 0xF0 -0xF8 registers when this issue occurs?

    To program the device, you can use the calculator tool shared here: [FAQ] SN65DSI8x Programming Tools 
    Please refer to the "READ ME" sheet in the file, and use the register settings to program the device. You can enable test pattern to output an internally generated pattern.

    Best regards,
    Ikram