CSI2 clock index-0 with CSI2 data index-1 for RPi camera for custom board?

[khang.l4es]

Hi Forum,

I purchased I custom carrier board for Jetson Xavier NX/Orin NX with following MIPI-CSI2 interfaces :

The one on the right has CSI clock of index 0, which differs from the Jetson Orin Nano Developer Kit.
I would like to know if there’s any possibility to combine the CSI clock index 0 with the CSI data index 1 for being used with Raspberry Pi camera, please ?

Best Regards,
Khang

[JerryChang]

hello khang.l4es,

per developer kit, CSI1 is CSIB of J20, CSI2 is CSIC of J21; CSI1 cannot support 4-lane config.
since you’ve a custom carrier board, please using CSI0 to enable your 4-lane config.

as you can see in [Jetson Orin NX Series and Orin Nano Series Design Guide], please refer to… [Figure 10-2. CSI 4-Lane Connection Options].
when running with 4-lane config of CSI0/1, only CSI0 clock us used.

[khang.l4es]

Hi @JerryChang,

The expectation is that we would like to use dual Raspberry-Pi like cameras with 1-lane data (the global shutter IMX296) or other 2-lane data (imx477hq, …). Meanwhile, with the CSI1 connector on the right of the picture I shared, it looks like the used data lanes are on pin#2/3 and pin 5/6, but the index does not match which the index of CSI clock on pin# 8/9.

I think the board’s maker only modified the index of the CSI clock from 1 (on the Jetson Orin Nano Devkit) to 0 but he did not change the associated data lanes index (from 1 to 0 as well)x. For that reason, this specific connector is not compatible with a Raspberry Pi camera module anymore.

Regards,

[JerryChang]

you meant to configure a camera that using CSI1 data but CSI0 clock? sorry, that’s not supported.

[khang.l4es]

Thanks @JerryChang for the confirmation.

However, I could understand that this custom board would allow me to have dual 4-lane cameras. However, in order to achieving that, there would be an adapter board for the first MIPI-CSI2 port/connector.