PROCESSOR-SDK-J722S: CSI-TX require soft-reset

Part Number: PROCESSOR-SDK-J722S

Tool/software:

Hi experts,

We have established such image data link: 

camera -> serdes ->  capture  -> csi-tx -> serializer(max96717)  -> image adapter plate

When running, the graph is 30fps as below.

However, the serializer at the back end of the csi-tx module shows that no data has been received.

I measured that there were valid waveforms on both MIPI data lane and clock lane.

Finally, I discovered that by performing a soft reset of the csi-tx (0x30181020) twice, the serializer showed that it had received the data.

However, we have never encountered such a problem on the j721e and j721s2 before.

Could you help me figure out why there is such a difference?

Thank you!