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PROCESSOR-SDK-J722S: Device driver for DSI interface

Ryuuichi machida
Guru 12695 points
Part Number: PROCESSOR-SDK-J722S
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hello,

I'm checking driver support information for RTOS of TDA4VEN.
According to following information, you described supported feature for DSS.
https://software-dl.ti.com/jacinto7/esd/processor-sdk-rtos-j722s/11_00_00_06/exports/docs/mcu_plus_sdk_j722s_11_00_00_12/docs/api_guide_j722s/DRIVERS_DSS_PAGE.html#autotoc_md391
It seems that you support OLDI and DPI as DSS driver on RTOS, however, there is no description about DSI in this page.
Do you support DSI interface on your RTOS SDK ?

Best Regards,

  • 0
    TI__Guru**** 477985 points

    Hi,

    Well, yes, but it is supported at the driver level and not enabled at the OpenVX level. 

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Guru 12695 points

    Hello,

    Thank you for your reply.
    Could you please tell me which RTOS SDK directory DSI driver information is stored ?

    BR,

  • 0 in reply to Ryuuichi machida
    TI__Prodigy 20 points

    Hi,

    Driver directory : source/drivers/dss/v0/hw_include/{dphy,dsi,..}

    Example that you can use to test DSI : examples/drivers/dss/dss_display_test/dss_display_test.c . Note that we are using the DSI to eDP bridge present on the board so the output will be from the display port.

    Steps for building the example are same as any other PDK RTOS example. You need to make following changes in syscfg of the display test example. The steps are as follows :  
    1. Open syscfg tool : make -C examples/drivers/dss/dss_display_test/j722s-evm/main-r5fss0-0_freertos/ti-arm-clang syscfg-gui
    (To be run from mcu_plus_sdk directory)

    2. Add a new DSS instance as shown in image, DSI is using the second DSS instance.

    3. Remove the first instance by the name CONFIG_DSS0. The config should look as shown in below image. After this save the configuration.

    4. Now, build the example as per documentation. Make sure to build the required libraries before building example. 

  • 0 in reply to Abhishek Chugh
    Guru 12695 points

    Hi,

    Thank you for your reply.
    In default, it seems that "dss_display_test" for OLDI. Do you mean that user just change interface via sysconfig ?

    Best Regards,

  • 0 in reply to Ryuuichi machida
    TI__Prodigy 20 points

    Hi,

    Yes, you have to change interface and DSI can be selected from interfaces only for DSS1, that's why you need above steps as well.

    Regards,

    Abhishek Chugh