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DS90UB953-Q1: ds90ub953-q1 and ds90ub954-q1 2 lane config?

Part Number: DS90UB953-Q1

hi,

I am use DS90UB953 and DS90UB954, my source is 1280x720@30 mipi csi-2 2 lane, how to confige the DS90UB953  and DS90UB954 when use the 2 lane mode,I  confige the 0x02 register in DS90UB953  to 0x22,and 0x33 in DS90UB954 to 0x23,but there is not have output in DS90UB954 ,the CSI CLK and  CSI datx is HIGH,is there any demo how to config the 2 lane mode,or how can I do now,thanks very much.

MY CONFIG:

953:

02    22

954:

0C 81 

1F 03 

33 23 

20 20