DS90UB960-Q1: [DS90UB960-Q1] use the 3 camera module in DS90UB960.

Hi Hosung,

Thanks for your inquiry. Do you have any feedback on if this issue is observed in only line concatenated forwarding? Or if this issue is also observed when basic synchronized forwarding is being used? Also, do you have a register dump of the DS90UB960 which I could take a look at?

Best,

Thomas

Hi Hosung,

One other follow up question, what do you mean here by the below statement?

Shin hosung said:

But, if I use the 3 camera, It doesn't work.

Does this mean that the serializers in the camera module do not lock to the deserializer? CSI data output from the deserializer is not recognized by the SOC? Other potential issues?

Best,

Thomas

Hi Thomas,

[1] It's your register dump of the DS90UB960.

    As you saw, the lock's register is 0xc3 ( reg 0x4d )  it's LOCK status.

[normal case >> connect the 4 camera ]
root@imx8mp-var-dart:~# i2cdump -f 2 0x3d
No size specified (using byte-data access)
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-2, address 0x3d, mode byte
Continue? [Y/n] Y
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 7a 00 1e 40 d0 01 00 fe 1c 10 7a 7a 0f b9 00 ff z.?@??.???zz??..
10: 91 00 00 00 00 00 00 00 01 0a d7 61 a0 00 04 02 ?.......???a?.??
20: 00 3c 01 00 00 00 00 00 00 00 00 00 00 00 00 00 .<?.............
30: 00 00 01 03 01 03 00 00 00 00 00 00 00 00 00 00 ..????..........
40: 00 a9 71 01 00 00 20 00 00 00 00 12 38 c3 04 25 .?q?.. ....?8??%
50: 20 00 00 00 00 00 00 00 58 00 00 b0 00 00 00 00 .......X..?....
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 7f aa 88 .............???
70: 1e ec e4 02 d0 0c 80 c5 00 01 00 00 20 00 00 00 ????????.?.. ...
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
90: 01 f0 01 74 ff ff 00 00 00 00 00 00 00 00 00 00 ???t............
a0: 00 00 00 00 00 1d 00 00 00 00 00 00 00 00 00 00 .....?..........
b0: 1c 3a 14 08 25 00 18 00 ff 33 83 74 80 00 00 00 ?:??%.?..3?t?...
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
d0: 00 43 94 02 60 f2 00 02 00 00 00 00 00 00 00 00 .C??`?.?........
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
f0: 5f 55 42 39 36 30 00 00 00 00 00 00 00 00 00 00 _UB960..........
root@imx8mp-var-dart:~#

[abnormal case >> it's connect the 4 camera, but one of 4 camera was broken.]
root@imx8mp-var-dart:~# i2cdump -f 2 0x3d
No size specified (using byte-data access)
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-2, address 0x3d, mode byte
Continue? [Y/n] Y
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 7a 00 1e 40 d0 01 00 fe 1c 10 7a 7a 0f b9 00 ff z.?@??.???zz??..
10: 91 00 00 00 00 00 00 00 01 0a d7 61 a0 00 04 02 ?.......???a?.??
20: 00 3c 00 00 00 00 00 00 00 00 00 00 00 00 00 00 .<..............
30: 00 00 01 03 01 00 00 03 00 00 00 00 00 00 00 00 ..???..?........
40: 00 a9 71 01 00 00 20 00 00 00 00 12 38 c3 14 25 .?q?.. ....?8??%
50: 1f 00 00 00 00 00 00 00 58 00 00 b0 00 00 00 00 ?.......X..?....
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 7f aa 88 .............???
70: 1e ec e4 02 d0 0c 80 c5 00 01 00 00 20 00 00 00 ????????.?.. ...
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
90: 03 ae 03 ae ff ff 03 ae 00 00 00 00 00 00 00 00 ????..??........
a0: 00 00 00 00 00 1d 00 00 00 00 00 00 00 00 00 00 .....?..........
b0: 1c 3a 14 08 25 00 18 00 ff 33 83 74 80 00 00 00 ?:??%.?..3?t?...
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
d0: 00 43 94 02 60 f2 00 02 00 00 00 10 00 00 00 00 .C??`?.?...?....
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
f0: 5f 55 42 39 36 30 00 00 00 00 00 00 00 00 00 00 _UB960..........
root@imx8mp-var-dart:~#

[2]  You said >> "One other follow up question, what do you mean here by the below statement? "

it's abnormal case.

I means, it's connect the 4 camera, but one of 4 camera was broken.

As this status, the output signal of DS90UB960 doesn't work.  ( I check it by oscilloscope )

best regards,

hosung shin.

Hi Tomas,

I had already tried it.

[1] the 3 camera configuration >> it work fine

[2] the 2 camera configuration >> it work fine

But, as our case, we don't recognize the broken camera.

then, we don't change the camera's configuration.

Is there a way like this ( don't recognize the broken camera ) ?

best regards,

hosung shin.

Hi Thomas,

I got it, thanks you

best regards,

hosung shin.