[DRA829] DP display issue with Vision Apps

Taro Shibata

Hello,

I run Auto Valet Parking Application on J7 Alpha EVM.
I tried to connect below 2 models of DP displays to right-side DP connector on common board.

(1) LG 24UD58-B
(2) LG 32UD99-W

I confirmed that (1) works fine, but (2) cannot detect video signals from J7 EVM.
I referred below thread, and from what I understand this is driver related issue but not silicon issue, right?

https://e2e.ti.com/support/j721e/f/1026/t/830498?tisearch=e2e-quicksearch

Are there any plan to support the display (2)?

Regards,
-Shibata

over 5 years ago

0 Subhajit Paul over 5 years ago

TI__Expert 7015 points

This is not a driver issue. If a monitor is not supported, it might be due to failure of link training or unsupported mode that is published by the application.

You can look into the file pdk/packages/ti/drv/dss/src/drv/dctrl/dss_dctrlExtended.c to see the driver workflow when a new monitor is connected / disconnected.

- Subhajit

0 Taro Shibata over 5 years ago in reply to Subhajit Paul

TI__Expert 8360 points

Hi Subhajit,

Thanks for your comment.

I will check the driver code.

Regards,

-Shibata

0 Subhajit Paul over 5 years ago in reply to Taro Shibata

TI__Expert 7015 points

Taro Shibata,

Any updates on this?

- Subhajit

0 Subhajit Paul over 5 years ago in reply to Subhajit Paul

TI__Expert 7015 points

Taro Shibata,

Any updates on this?

- Subhajit

0 Taro Shibata over 5 years ago in reply to Subhajit Paul

TI__Expert 8360 points

Hi Subhajit,

Sorry for the rate reply.

Unfortunately the display LG 32UD99-W is no longer in my office, so I have no chance to debug this issue with it.

Regards,

-Shibata

0 Subhajit Paul over 5 years ago in reply to Taro Shibata

TI__Expert 7015 points

In that case I am marking this tread as resolved. Please create a new E2E ticket when you have access to the monitor

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[DRA829] DP display issue with Vision Apps