TDA4VM: TDA4 A72 output DP and DSI

Hi Nancy Wang,

No Linux does not support DSI output. Can you please use PSDKRA, ie R5F driver? R5F supports both DP and DSI simultaneously.

Regards,

Brijesh 

Hi,

Thanks! 

How should it be configured? Is there any guidance?

Hi Nancy Wang,

Well, when you use dual display in vision apps, by default, ii uses eDP and HDMI output for the dual display. You could just need to replace HDMI output with DSI and make accordingly changes in the dctrl tree. I can guide you in making changes.

But before that, what is DSI output connected to? Can you first bringup the DSI and eDP outputs independently? 

Regards,

Brijesh

Hi,

Thanks!

I just didn't find this file and the properties of the DSI output, please tell me which file should I modify.

Regards,

Hi,

This file is ti-processor-sdk-rtos-j721e-evm-08_01_00_13\vision_apps\utils\dss\src\app_dss_dual_display_defaults.c, and you need to enable ENABLE_DSS_DUAL macro in ti-processor-sdk-rtos-j721e-evm-08_01_00_13\vision_apps\platform\j721e\rtos\common\app_cfg_mcu2_0.h to enable dual display. This needs to be changed for DSI output..

Regards,

Brijesh

Hi , 

thanks,

I want to draw something to output to DP or DSI.

Is there an example for reference?

Regards,

Pengge.

Hi pengge yin,

This is not related to DP or DSI. You need to use input pipeline and then pipeline needs to be connected to the DP or DSI output.. You could refer to Draw APIs. These APIs can draw on the buffer and then buffer can be used on specific pipeline..

Regards,

Brijesh