cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
Highlighted
Visitor
Visitor
1,802 Views
Registered: ‎05-29-2018

DisplayPort resolution on ZCU-102

Jump to solution

How to change resolution for the DisplayPort interface on the ZCU-102 evaluation board?

I have a 272x340 display. Is it supported by ZCU-102?

0 Kudos
1 Solution

Accepted Solutions
Highlighted
Moderator
Moderator
1,644 Views
Registered: ‎11-09-2015

HI @efridman,

 

i don't understand why MIPI core is not part of Zynq chip in the first place being the interface for high quality embedded displays

That was the choice which was made for MPSoC. For most customers, using the PL is not an issue

 


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**

View solution in original post

0 Kudos
16 Replies
Highlighted
Teacher
Teacher
1,790 Views
Registered: ‎06-16-2013

Hi @efridman

 

First of all, does your display (272x340) have Display port ?

I guess your display (272x340) has mipi or paralell interface.

If my understanding is correct, you can not output video signal to your display...

 

Best regards,

 

Highlighted
Visitor
Visitor
1,771 Views
Registered: ‎05-29-2018
yes. its a MIPI interface and i plan to use dp2mipi adaptor. why do you think it is not possible?
0 Kudos
Highlighted
Moderator
Moderator
1,758 Views
Registered: ‎11-09-2015

Hi @efridman,

 

There is a lot of discussion on adapters with the Displayport controller or the DP Subsystems. Most of the adapters are not working.

 

You would need an active adapter which is fully DP sink compliant. In most case it is not true.

 

So as @watari, I do not recommend you to go this way


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**
0 Kudos
Highlighted
Visitor
Visitor
1,755 Views
Registered: ‎05-29-2018
i have a shelf item targeted for this purpose-Lontium LT7911 chip. how i can be sure if it works?
0 Kudos
Highlighted
Moderator
Moderator
1,749 Views
Registered: ‎11-09-2015

Hi @efridman,

 

The only way you can be sure it is working is by testing it.

 

As mentioned, Xilinx does not supports adapters. The user is responsible for doing the caracterization


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**
0 Kudos
Highlighted
Visitor
Visitor
1,744 Views
Registered: ‎05-29-2018
sounds strange to me that xilinx does not provide any technical info what is working and what is not. i would expect a detailed explanation about DP interface so at least one will know how to design compatible adaptor. dp interface is somehow stange choice for embedded devices
0 Kudos
Highlighted
Moderator
Moderator
1,729 Views
Registered: ‎11-09-2015

Hi @efridman,

 

The DP controller supports RX devices that are compliant with the DP1.2 spec without optional features. For example, the displayport controller does not support the VESA DisplayPort Interoperability Guidelines (also known as DisplayPort++), which is required to support Passive DisplayPort cables.

 

Xilinx cannot test all equipment on the market to know if they are working or not... If you think your adapter is fully compliant to the DP1.2 spec then it might work.


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**
Highlighted
Teacher
Teacher
1,706 Views
Registered: ‎06-16-2013

Hi @efridman

 

I'm sure that the suitable solution is to choose MIPI interface instead of Display Port.

The reasons are as below.

 

1. Required technology is different between MIPI and DP in this situation.

2. At least you implement DP Tx driver (link training and so on. It's difficult), if you use. However, if you use MIPI, the implementation of FW is easy.

3. Also, it is difficult to find active adapter from DP to MIPI.

4. and so on.

 

Therefore, I don't suggest to use DP. I only suggest to use MIPI to connect to your device.

 

Best regards,

 

0 Kudos
Highlighted
Visitor
Visitor
1,699 Views
Registered: ‎05-29-2018

the DP interface is the only video interface on the PS side with drivers already implemented. 

0 Kudos
Highlighted
Moderator
Moderator
1,563 Views
Registered: ‎11-09-2015

HI @efridman,

 

May we know why you need to have the solution in the PS, not in the PL?


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**
0 Kudos
Highlighted
Visitor
Visitor
1,561 Views
Registered: ‎05-29-2018

of course. we don’t want to activate PL side just for display. the PL static power consumption is about 1-1.5 which is too high for us

0 Kudos
Highlighted
Moderator
Moderator
1,541 Views
Registered: ‎11-09-2015

Hi @efridman,

 

Ok I understand. So as mentioned, you will need to do your own characterization for the adapter. Again, Xilinx is not supporting adapters but this does not means that they will not work.

Note that some might work requiring changes in the drivers.

 

You might want to discuss this matter with your FAE


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**
0 Kudos
Highlighted
Moderator
Moderator
1,502 Views
Registered: ‎11-09-2015

Hi @efridman

 

If your question is answered or your issue is solved, please kindly mark the response which helped as solution (click on "Accept as solution" button below the reply)

If this is not solved/answered, please reply in the topic giving more information on your current status.

Thanks and Regards,


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**
0 Kudos
Highlighted
Teacher
Teacher
1,477 Views
Registered: ‎06-16-2013

Hi @efridman

 

FYI.

 

https://www.xilinx.com/support/answers/68227.html

 

However, I don't suggest to use DP Tx to MIPI display...

I think that "The right man for the right job."

 

In this case, even if it increase power consumption, I suggest to implement MIPI Tx...

Because of a mechanism of DP is little complex...

 

Best regards,

0 Kudos
Highlighted
Visitor
Visitor
1,423 Views
Registered: ‎05-29-2018

I'm already convinced that using the DP to drive the MIPI interface could be problematic. With this said, i don't understand why MIPI core is not part of Zynq chip in the first place being the interface for high quality embedded displays.

0 Kudos
Highlighted
Moderator
Moderator
1,645 Views
Registered: ‎11-09-2015

HI @efridman,

 

i don't understand why MIPI core is not part of Zynq chip in the first place being the interface for high quality embedded displays

That was the choice which was made for MPSoC. For most customers, using the PL is not an issue

 


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**

View solution in original post

0 Kudos