topic Re: How to feed two CVBS inputs simultaneously to MIPI CSI-2 interface of iMax6 Quad in i.MX Processors

How to feed two CVBS inputs simultaneously to MIPI CSI-2 interface of iMax6 Quad

peteramond — Mon, 05 Sep 2016 14:43:40 GMT

Hi all,

I need to feed two CVBS inputs to iMAX6 Quad Sabre Lite Development Board (https://boundarydevices.com/product/sabre-lite-imx6-sbc/) through MIPI port.

I went through this thread >> https://ez.analog.com/docs/DOC-12872 << and then I could understand that it is not possible to get two video outputs simultaneously using ADV 7280-M Chip. As well as if we are going to use two ADV7280-M chips it will not possible as we need two MIPI CSI-2 receivers. I couldn't find any chip for get output of 2 CVBS videos using single MIPI transmitter.

What is your solution for handle two CVBS inputs simultaneously using MIPI interface of i.MAX6 Quad ?
Is it possible to feed two CVBS inputs to MIPI interface on i.MAX ?
If I'm Using ADV 7280-M to input one CVBS input; can you guys provide me support documents to build V4L2 linux drivers for ADV 7280M ?

Thank You,

Peter

Re: How to feed two CVBS inputs simultaneously to MIPI CSI-2 interface of iMax6 Quad

igorpadykov — Tue, 06 Sep 2016 23:51:51 GMT

Hi Peter

one will have to either use a MIPI CSI-2 hub (if anything
like this already exists) or multiplex the two streams in an FPGA.
Each cvbs input in this case should use a different stream identifier (stream 0-3).

For V4L2 linux drivers for ADV 7280M may be recommended to apply to ADV7280 vendor

or look at documentation

https://wiki.videolan.org/Documentation:Modules/v4l2/

Best regards
igor
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Re: How to feed two CVBS inputs simultaneously to MIPI CSI-2 interface of iMax6 Quad

lijie2045 — Tue, 06 Jun 2017 06:13:48 GMT

ADV7280M ONLY SUPPORT 1CH

YOU MAY SEE FOR JUST LIKE ISL79985/ISL79987 FOR MULTI CH VIDEO INPUT SOLUTION