CSI and Mipi

[jiujinhong]

Hi,

in another thread,

"

For iMX6DQ, there are two IPUs, so they can support up to 4 cameras at the same time. But the default BSP can only support up to two cameras at the same time.

The attached patch can make the BSP support up to 4 cameras based on 3.10.53 GA 1.1.0 BSP.

The 4 cameras can be:

- 1xCSI, 3xMIPI

- 2xCSI, 2xMIPI

- 4xMIPI

For 4xMIPI case, the four cameras should be combined on the single MIPI CSI2 interface, and each camera data should be transfered on a mipi virtual channel.

"

Question, can you help to give explain to "1xCSI, 3xMIPI"? How about "3xCSI, 1xMIPI"?Why 4xMIPI four cameras shoule be combined on the single MIPI CSI2 interface?

[joanxie]

refer to the figure, imx6 just has two CSI ports, so the max CSI number is two, and mx6 has 4 virtual channels for mipi, should be connected max 4 mipi, so you can know the reason couldn't connect 3CSI+1MIPI, because mx6 just has one mipi/csi2 port, so 4 mipi need to combined on the single MIPI CSI2 interface