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NPal.2
Visitor II
July 22, 2021
Solved

Dual Display Support

  • July 22, 2021
  • 1 reply
  • 1360 views

Hi,

Is STM32MP1 is able to drive two displays at once , one via DSI and another via RGB is it possible?

Following are the combinations :

RGB to HDMI ---- to drive HDMI display.

DSI to HDMI ----- to drive HDMI display.

RGB to LVDS ----- to Drive LVDS display.

DSI to LVDS ----- to drive LVDS display.

Which of these would be best combination to drive two displays?

I want to drive LVDS and one any display via HDMI.

    This topic has been closed for replies.
    Best answer by MM..1

    LTDC internal peripheral - stm32mpu chapter 2

    Or simply MP internal have only one LTDC then only one RGB or DSI . DSI is only internal chain LTDC - RGB - DSI

    And simply when externaly you connect to MP desired peripheral you can have more LCDs (as graphics card in PC).

    1 reply

    M
    MM..1
    Graduate II
    July 22, 2021

    I mean no you cant combine RGB and DSI because both is drived with LTDC.

    Dual display is teoreticaly possible only on different connection example SPI + DSI ...

    N
    NPal.2Author
    Visitor II
    July 23, 2021

    @MM..1​ Thanks for the response. What i have understood is we can drive two display one via RGB and another via DSI at the same time given that correct device tree changes are in place. Let me know if my understanding is correct.

    M
    MM..1
    Graduate II
    July 23, 2021

    Isnt correct.

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