TK1 CAM_I2C detect issue

Hello,
I used “i2c-tools” to detect I2C busses as following link,
http://elinux.org/Jetson/I2C#To_quickly_test_I2C_busses_operation

I have been trying to detect CAM_I2C and getting nothing. I have been able to successfully detect the other three I2C lines without any issues. When I check the lines for CAM_I2C though they are low be default. I am using the grinch 21.3.4 kernel still. I also checked to make sure I am using pins 8 and 11 of the J3A2 header shown above. I am not sure why this is not working. Is there something special I need to do to make cam_i2c work? Or I have to upgrade my L4T to 21.4?

Any help will be highly appreciated. Thanks.

Hello, Drexler:
what’s the command you are using, and the result?
It’s better to paste your log here.

To use that tool, you need run a camera application first, or the sensor will be disabled.

You can run the simple GST pipeline as follows:
gst-launch-1.0 nvcamerasrc ! ‘video/x-raw(memory:NVMM),width=1920, height=1080, format=(string)I420’ ! nvhdmioverlaysink -e

and run i2cdump in another console:
sudo i2cdump -f -y 6 0x36
No size specified (using byte-data access)
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
30: 00 00 00 00 00 00 00 42 00 00 68 11 00 00 00 00 …B…h?..
40: c7 00 00 00 00 00 00 00 00 00 00 00 00 ab 00 00 ?..?..
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …

br
Chenjian