RE: [PATCH 1/2] dt-bindings: iio: temperature: Add ADT7604 support to adi,ltc2983

[Stan, Liviu]

Thank you for the comments, and I apologize for the delayed answer. 

On Mon, Apr 27, 2026, Conor Dooley wrote:
> I have to wonder if this is the right approach, if it's the same device
> just with a different label and advertised purpose.

Could you expand on this? Are you suggesting the copper-trace@ and
leak-detector@ node types aren't needed, or something about the overall
approach of adding ADT7604 to the existing ltc2983 binding? I want to
make sure I understand the concern.

> Pedantry perhaps, but isn't this an "ohmmeter"?

For the naming I followed the convention used in this binding: rtd@, 
thermocouple@, diode@ are named after what they are, not what
they measure. copper-trace@ names the component being sensed. Jonathan
has a related question below about whether this should just reuse rtd@
with type 18, so the name might change depending on where that lands.

> I want to look into this property, where is the datasheet?

The ADT7604 datasheet is not yet publicly available. Will add the URL
once it is.
 
> Are these ever linked in a different way?
> Ditto here and in the rtd node. Are these fixed linkages or actually
> dynamic?
 
The linkage is board-dependent. Any rsense on channels 2-20 can be
paired with any sensor channel in that range. The example uses two
separate sense resistors because the copper trace and leak detector
channels need different values (100Ω vs 10kΩ, these are the recommended
values in the datasheet). A board where all sensors share the same 
resistance range could use a single rsense.

Thanks,
Liviu