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PROCESSOR-SDK-J722S: DIsplay params in TDA4VEN

srikar varaganti
Intellectual 280 points
Part Number: PROCESSOR-SDK-J722S

Tool/software:

Hello,

SDK version: 10

I am currently trying to change the display params to work with a 1920X720 monitor in j722s SDK but couldn't find the code which I have to change in order to make the changes.

Usually in TDAHigh we update these params in vision_apps/platform/rtos/common/app_init.c. But for j722s for single display i couldn't change these params as the code does not have them. Please suggest me how I can achieve this, what code to change, what codes to build.

Usually, I suppose the location mentioned in the screenshot below is where we change the display params for different monitors. But for Enable_DSS_Single does not have this option. Could you please let me know how to achieve this. 

  • 0
    TI__Guru**** 478035 points

    Hi,

    Even for J722S, you could update the timing parameters at the similar place for J722S platform, but its currently fixed to 1080p resolution for HDMI output, the code uses default timing parameters from the platform/j722s/rtos/mcu2_0/generated/ti_drivers_config.c file and its gets set in appDssInit -> DispApp_create -> DispApp_initDssParams API. 

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Intellectual 280 points

    Hi Brijesh, 

    after searching for mInfo definition, we observed that the pixel clock is not set according to the comment mentioned in the screenshot below (highlighted). Could you confirm if we can assign this parameter to a custom value within appDssInit -> DispApp_create -> DispApp_initDssParams API. currently, we are trying to hardcode the display parameters in DispApp_initDssParams. 

  • 0 in reply to srikar varaganti
    TI__Guru**** 478035 points

    Hi Srikar,

    This is done in the file vision_apps\platform\j722s\rtos\mcu2_0\generated\ti_power_clock_config.c, in the variable gSocModulesClockFrequency.. 

    Regards,

    Brijesh