I2C device not detected with device tree implementation

The HW pin are compatible however the software pin map may be different.

hello ShaneCCC
Thanks for reply,
I also run the command which is “sudo i2cdetect -y -r 1”, the spot on 0x74 is empty (–),even I rerun after “sudo i2cget -y 1 0x74 0x00”,same result.would you give some advise?

Hi FPSUsername,

<&en_vdd_cam> is a commonly used regulator in the device tree, so It already might have been enabled. So Yes, that is the entry I was talking about and it is ok to add that entry that you disabled (as your driver requires that entry) and the driver should probe.

Okay, not sure if I quite understand why it has to be there in the first place. The TCA chip is powered on with the 5V system on my carrier board (USB, etc). I did not write any driver for the TCA, I only included it in the device tree as it’s a part of the power sequencing and GPIO of my imaging sensors.