Sensor driver external clock definition

We are developing MIPI driver for the camera , which is using its own clock for MIPI.

In sensor programming guide we have:
mclk - Name of the input clock for the device. The default value is extperiph1.
Not needed if the sensor is using the clock source provided by the camera module.”

But after I have removed the clock definition from DTS , the driver is no more recognized as video0 device.

How should I define the external clock?
Please ,advice.

What’s the error message?

It was a HW problem and it is fixed.Thanks