Dual ISP with single camera on i.MX8MP

[TimBr]

Hello,

I am working on a smart camera implementation using the i.MX8MPlus using the ISP for image processing.

We want to do different things with the captured images. I notice there are two ISP units in the chip and it would be nice if can make use of them both with the single sensor we use.

An example can be to capture two differently scaled images in parallel, or with different data formats (raw and processed for example).

My question is: Is it possible to configure the ISPs in a way both ISPs get their data from the same MIPI-CSI port? And if so, how can I configure that?

Kind regards,
Tim.

[igorpadykov]

Hi Tim

for such use case one can look at AN13430  i.MX 8MP Dual ISI channels for single CSI

AN13430SW

https://www.nxp.com/products/processors-and-microcontrollers/arm-processors/i-mx-applications-proces...

Best regards
igor

[TimBr]

Dear Igor,

The document you pointed to at first looked exactly what I need.

However when I look closer it only talks about the ISI image flow. We are using the ISP and both the ISI blocks are disabled in device-tree.

In the document the ISP is not mentioned at all in text, it is only shown in block diagram.

The block diagram in the document makes me worry, the arrow from CSI0 seems hard routed to ISP0 and same for CSI1 to ISP1. Or can the ISI block be used to route this differently?

Kind regards,
Tim.

[igorpadykov]

unfortunately such example with ISP is not available, sorry.

May be recommended to proceed with help of  https://contact.nxp.com/new-prof-svcs-sw-tech

to develop it.

Best regards
igor