The Sensor Software Driver Programming Guide gives an example for how control points are to be specified to the Xavier ISP for decompressing a PWL input. In the example, the first control_point_0 is explicitly specified as (0,0) in the DT. Is that required or does the Xavier ISP automatically fill in (0,0) as a first point? If it is required to be always specified, we lose one of the 9 control points.
I ask because some imagers assume (0,0) as a default. When setting their registers, control_point_0 would be unequal to (0,0) and start wirth the first non-zero one.