Compiler/TDA4VM: VOUT1 output format YUV422 with TDM Mode

Hi TI members:

After our Serializer vendor told us their component can;t receive data on BT.565 protocal.

So my origin question 2 need to change

2. How to set DPI1 as "2.1 Emded Sync Output" ,  ==> 2. How to set DPI1 as "3 Discrete Sync YUV422 Output Concept"

I just start to study this part.

So please help to check question 1 & question 3 first!!!

BR

Sentinen Chen

Hi TI members:

Does anyone can help to double check my origin questions??

1. Is spracg3.pdf way still available on TDA4 platform? 

2. Is there related patch on TDA4 platfom about set panel-timing to BT601 uyvy 30fps & TDM Mode ? 

And I have some new questions

3. Does TDA4 DP' with YUV422 & BT601 can support to  resolution 1280*720*30fps??

BR

Sentinen Chen

Hi Chen,

Please find answers to your questions below,

>>>> 1. Is spracg3.pdf way still available on TDA4 platform? 

Well, you could use this method, but there are also other options available on TDA4x for BT601 output format.

>>>> 2. Is there related patch on TDA4 platfom about set panel-timing to BT601 uyvy 30fps & TDM Mode ? 

Dont have the patch, but SW/driver supports it. we need to call them appropriately from the application.

>>>> 3. Does TDA4 DP' with YUV422 & BT601 can support to  resolution 1280*720*30fps??

You mean eDP? Yes, eDP can support this resolution as long as receiver can receive and display this resolution..

Rgds,

Brijesh

Hi Brijesh

>>>  Well, you could use this method, but there are also other options available on TDA4x for BT601 output format.

Thanks, does the "other options" mean "12.6.2.1.4 VSYNC/HSYNC/DE Signal Export to SoC Boundary" in  DRA829/TDA4VM/AM752x Technical Reference Manual (Rev. A):

12.6.2.1 DISPC Environment

 12.6.2.1.4 VSYNC/HSYNC/DE Signal Export to SoC Boundary

>>> Dont have the patch, but SW/driver supports it. we need to call them appropriately from the application.

Thanks, is there any application sample code about this function can let us reference? 

>>> You mean eDP? Yes, eDP can support this resolution as long as receiver can receive and display this resolution..

sorry,  the interface is DPI1 with YUV422 & BT601, not eDP.

BR

Sentinen Chen

hi Chen,

Essentially, you could use two VPs, one configured for embedded sync output format and other for discrete sync output format.  There is way in DSS to run both the VPs in sync mode. Then you could use DATA from VP configured in embedded sync output format and sync signals from the other VPs.

Please note that this is supported only for few VP combos. You could refer to TRM for more details. 

Rgds,

Brijesh

Hi Brijesh:

>>> Then you could use DATA from VP configured in embedded sync output format and sync signals from the other VPs

Thanks your reply.

And one more questions,

As you say, "use DATA from VP configured in embedded sync output format and sync signals from the other VPs",

so this mean the final data output format should already include internal sync signal like below picture, right??

I just worry about our cumstomer display can't recongize the frame data with internal sync signal.

Are the two things of "YUV422 with BT.656" and " embedded sync output format" Inseparable?

BR

Sentinen Chen

Hi Chen,

Yes, Data will have embedded sync codes..  That's inseparable. 

What is the requirement for customer display? 

Rgds,

Brijesh

Hi Brijesh:

>>> What is the requirement for customer display? 

Right now, we only get below information form customer

Resolution format: 1280*720*30fps, Protocol: BT.601

and output flow as below

TDA4 <-- DPI1 interface --> MAX97615 Serializer <-- GMSL --> Customer's IHU display (with Deserializer MAX9288)

BR

Sentinen Chen

Hi Brijesh:

Thanks your comfirm. 

BTW, is there any related demo sample code can let us study? 

BR

Sentinen Chen

Hi Chen,

No example is yet available, will help you to get it working..

rgds,

Brijesh

Hi Brijesh:

Thanks a lot!!!

Our project is just in schemtic design stage. 

When we start to bring-up this future. 

I will open new thread to ask help. 

BR

Sentinen Chen