The meaning of i.MX6 MIPI-CSI "virtual channel".

[satoshishimoda]

Hi community,

I have a question about i.MX6 MIPI-CSI.

According to reference manual (IMX6SDLRM Rev.1) chapter 19 and chapter 41, MIPI CSI supports up to 4 virtual channel.

I want to confirm the meaning of "virtual channel".

I guess "virtual channel" means "a number of screen", so i.MX6 can capture the following data if virtual channel ID is assigned to each screen, right?

640 * 480 pixels * 30 fps * 4 screens

Best Regards,

Satoshi Shimoda

[Yuri · Accepted solution]

  Virtual channel of MIPI CSI may be considered as virtual input (camera) screen.

As an example of application, using this feature, please take a look at the

following :

"4 video capture using MIPI-CSI2 port"

https://community.freescale.com/message/332067#332067

Have a great day,
Yuri

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[satoshishimoda]

Hi Yuri,

Thank you for your reply.

OK, I understood i.MX6Q can capture up to 4 cameras by Re: 4 video capture using MIPI-CSI2 port .

By the way, please see Figure 19-1 in IMX6DQRM Rev.2, we can see "VC0 to VC3".

I understand VC = virtual channel, correct?

If it is correct, according to Figure 19-1 in IMX6SDLRM Rev.1, i.MX6SDL have only 2 virtual channels.

So I feel i.MX6SDL can capture up to 2 screens even though i.MX6SDL reference manual says "MIPI CSI supports up to 4 virtual channel".

Is this correct?

Best Regards,

Satoshi Shimoda

[Yuri]

4 virtual channles are still available for the i.MX6 S/DL, but channel mapping

is different (regarding i.MX6DQ).

Debug steps for customer MIPI sensor.docx

Regards,

Yuri.

[satoshishimoda]

Hi Yuri,

> 4 virtual channles are still available for ther i.MX6 S/DL

Excellent!

Thank you for your great support!

Best Regards,

Satoshi Shimoda