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How to skip CSI0 to SMFC frame?

Question asked by Yan Gao on Mar 8, 2018
Latest reply on Mar 9, 2018 by Yan Gao

Hi,

I am trying to take use of the frame skip feature to decrease the frame rate of the camera. In i.MX 6Dual/6Quad Applications Processor Reference Manual, Rev. 4, 09/2017, 37.5.160 CSI0 SKIP Register (IPUx_CSI0_SKIP), CSI0_ID_2_SKIP says,

 

CSI0 to SMFC Skipping ID.
Data from the CSI0 to the SMFC has an ID associated with it. The ID is received from the MIPI interface.
The skipping mechanism between the CSI0 and the SMFC can be used for only one ID. There is no
skipping for data coming with ID different from the ID programed in this bits
00 - Skipping mechanism is activated on frames with ID equal to 00
01 - Skipping mechanism is activated on frames with ID equal to 01
10 - Skipping mechanism is activated on frames with ID equal to 10
11 - Skipping mechanism is activated on frames with ID equal to 11

 

What is the ID? Is it the virtual channel? How to configure/know the ID so I can drop the frame from connected camera?

 

Thanks,

Yan

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