I2C2 not working with i2cdetect

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1 
nvidia@tegra-ubuntu:~$ sudo i2cdetect -y -r 2
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          [  716.360607] tegra-i2c 3180000.i2c: pio xfer timed out addr: 0x3
[  716.367343] tegra-i2c 3180000.i2c: --- register dump for debugging ----
[  716.374915] tegra-i2c 31800�rJ2c: I2C_CNFG - 022c00
[  716.380666] tegra-i2c 3180000.i2c: I2C_PACKET_TRANSFER_STATUS - 0x10001
[  716.388046] tegra-i2� 3180000.i2c: I2C_FIFO_CONTROL - 0xe0
[  716.394318] tegra-i2c 3180000.i2c: I2C_FIFO_STATUS - 0x800080
[  716.400716] tegra-i2c 3180000.i2c: I2C_INT_MASK - 0x7d
[  716.406427] tegra-i2c 3180000.i2c: I2C_INT_STATUS - 0x2
[  716.412249] tegra-i2c 3180000.i2c: i2c transfer timed out addr: 0x3
-- [  718.416594] tegra-i2c 3180000.i2c: pio xfer timed out addr: 0x4
[  718.423858] tegra-i2c 3180000.i2c: --- register dump for debugging ----
[  718.431922] tegra-i2c 3180000.i2c: I2C_CNFG - 0x22c00
[  718.438038] tegra-i2c 3180000.i2c: I2C_PACKET_TRANSFER_STATUS - 0x10001
[  718.445843] tegra-i2c 3180000.i2c: I2C_FIFO_CONTROL - 0xe0
[  718.452913] tegra-i2c 3180000.i2c: I2Ce%=}MQQUM�- 0x800080
[  718.460321] tegra-i2c 3180000.i2c: I2C_INT_MASK - 0x7d
[  718.466416] tegra-i2c 31����rJ�c: I2C_INT_STATUS - 0x2
[  718.472615] tegra-i2c 3180000.i2c: i2c transfer timed out addr: 0x4
-- [  720.480591] tegra-i2c 3180000.i2c: pio xfer timed out addr: 0x5
[  720.488315] tegra-i2c 3180000.i2c: --- register dump for debugging ----
[  720.496867] tegra-i2c 3180000.i2c: I2C_CNFG - 0x22c00
[  720.503341] tegra-i2c 3180000.i2c: I2C_PACKET_TRANSFER_STATUS - 0x10001
[  720.511434] tegra-i2c 3180000.i2c: I2C_FIFO_CONTROL - 0xe0
[  720.518404] tegra-i2c 3180000.i2c: I2C_FIFO_STATUS - 0x800080
[  720.525333] tegra-i2c 3180000.i2c: I2C_INT_MASK - 0x7d
[  720.531691] tegra-i2c 3180000.i2c: I2C_INT_STATUS - 0x2
[  720.537965] tegra-i2c 3180000.i2c: i2c transfer timed out addr: 0x5

When I try i2cdetect on i2c2 I get these time outs. I2cget and set also time out when trying to talk to my device (a camera from e-consystems).

This is on a custom carrier board. i2c0 works fine, I have a device hooked up there talking. Its this i2c2 that is causing me a problem, and unfortunately it is quite important, as I can’t rewire the connection to the econ camera.

Is there a regulator I have to turn on, or additional dtb node I need to add or something to get i2c2 working?

2

@jrestifo
You can’t just detect the device from i2c bus without power on the sensor.
You should contact with e-con to help to know how to power on this sensor.

3

Device is powered. Strange thing is I get the same problem even without the camera connected. I2C2 having time outs. I don’t have this issue in the dev kit. According to the design guide, these have internal pull-ups. So I should be fine without any, right? Just trying to verify if this is a design issue or manufacturing defect. Thanks.