STM32MP23x Multi-Stream CSI-2 Four-Camera Support

[Jiwesh]

Can the STM32MP231 simultaneously capture or stream four 2-lane MIPI CSI-2 camera streams through a DS90UB960/TDES960 using VC0–VC3?

I have reviewed ST’s documentation on “How to use one or multiple multi-stream MIPI CSI cameras.” But did not get complete clarity on simultaneous capture of four camera streams. The documentation example appears to show routing for up to three streams/channels through the DCMIPP pipes (Dump, Main, and Aux).

[Erwan SZYMANSKI]

Hello ​@Jiwesh ,
Today we support up to 1 VC per DCMIPP pipeline, so yes you are right, the maximum number of Virtual Channel the DCMIPP can handle is 3 (for Dump, Main and Aux).

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Just for your information. In theory (from a HW point of view), there is a possibility that 1 single pipeline entry support 2 different VC, by “flip flopping” the VC configured in the Input selector to change at each frame (and so by dividing by 2 the framerate of each flow). However the SW does not support it today and there is no plan to develop it short term.

Kind regards,
Erwan.

[Jiwesh]

Thanks for the clarification, Erwan!

[Jiwesh]

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