topic Re: How many data lane in use (MIPI-CSI2) ? in i.MX Processors

How many data lane in use (MIPI-CSI2) ?

toanjunifer — Tue, 31 Mar 2020 08:43:04 GMT

Hi,

I'm using iMX6 Solo board with OV5645 camera (MIPI-CSI2). For some cases, I also use USB Camera Logitech C270. As I refer, iMX6 Solo has 2 data lanes(MIPI-CSI2). So, I have some questions:

How many lane in use when OV5645 is working ? How can I check it ?
Can I split each data lane for each camera if I use dual camera MIPI ?

Thank you so much,

Toan

Re: How many data lane in use (MIPI-CSI2) ?

toanjunifer — Wed, 08 Apr 2020 02:05:55 GMT

1. First question:

You mean: While OV5645 is working, all lanes available will be activated, right ?

2. Second question:

Yes. I also try dual camera. But my question not focus on this. My iMX6s has two lanes. And I use dual cameras. Can I split each data lane for each camera ? Or we can't control this and it's is automatically.

Thank you so much !

Re: How many data lane in use (MIPI-CSI2) ?

joanxie — Thu, 09 Apr 2020 02:14:23 GMT

1) depends on what data lane you set, The maximum speed of the interface is:
• 200Mhz for 4 data lanes configuration
• 250Mhz for 2 data lanes configuration

2) I don't think so, mipi csi can supports up to 4 data lane, obviously couldn't support up to 4 cameras, data lane is just physical connection, different camera needs virtual channel

Re: How many data lane in use (MIPI-CSI2) ?

toanjunifer — Thu, 09 Apr 2020 07:55:44 GMT

1. iMX6S has 2 data lanes. I just order an iMX8M Mini with 4 data lanes. And as you said, with 4 data lanes configuration, each lane is running at 200 MHz and maximum is 800 MHz, right ?

2. You're right. Data lane is just physical connection, so can I control each data lane for each camera(use MIPI-CSI2) via software ? In that case, I just use dual cameras and iMX8M Mini. And can I modify clock lane by edit this:

&ipu1_csi1_from_ipu1_csi1_mux {      clock-lanes = <0>;      data-lanes = <1 2>; };

Thank you so much ?

Re: How many data lane in use (MIPI-CSI2) ?

joanxie — Fri, 17 Apr 2020 09:55:41 GMT

for new products issue, I suggest that you can create a new topic, which can help other customers who have the same issue