Multiple camera system in Jetson TX2 with L4T28.1 using Auvidia J106

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi,

I am trying to setup a 4-6 camera system in TX2 with L4T28.1 using Auvidia J106.

Anybody successfully tested 4-6 camera system using Auvidia J106 setup?

I saw a Ridgerun wiki page demonstrating 6 camera system using J106, however its in TX1.

The problem I am facing is:

  1. In J106, 3 I2C bus is shared by 6 CSI ports. CSI port A&B uses I2C0, C&D uses I2C6, E&F uses I2C2.
  2. If I connect cameras to CSI ports which does not share I2C bus (A,C,E or B,D,F), everything is working fine.
  3. But if I connect cameras to CSI ports which share I2C bus (A&B or C&D or E&F), one of them is not working. I2C arbitration error occurs.

Just wanted to know if this is an hardware issue or any configuration issue from my side.

Note: Expecting response from Auvidia team as well (did not try direct customer support as the response will always be delayed).

Regards,
Rejeesh

2

The same device can’t connect to the same bus. You need a i2c mux to extend the i2c bus for multiple sensors.

3

Hi ShaneCCC,

Sorry I did not mention that J106 internally uses I2C shifter for CSI ports sharing I2C bus, so that should not be an issue.

Update from my side is that:

Streaming works in E & F CSI ports (both using I2C2) when cameras are connected through a SER-DES. I2C issue still prevails when cameras are connected directly. So, it seems to be some hardware issue (which I am not able to isolate).

Regards,
Rejeesh

4

Did you check if address conflict in the cameras sharing same I2C bus?

5

Hello,

Any update?

Same problem, get three cameras (VC IMX296) on A C and E recognised on I2C but streaming works only on E…

I have a J20 on tx2 dev board and the same cameras work on A C and E

Thanks in advance
David