Re: [PATCH 1/2] dt-bindings: iio: ad74413r: add binding for digital input threshold

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On 23/06/2023 23.57, Rob Herring wrote:
> On Fri, Jun 23, 2023 at 05:44:50PM +0100, Conor Dooley wrote:
>> On Fri, Jun 23, 2023 at 01:33:25PM +0200, Rasmus Villemoes wrote:
>>> diff --git a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
>>> index 590ea7936ad7..1f90ce3c7932 100644
>>> --- a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
>>> +++ b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
>>> @@ -51,6 +51,14 @@ properties:
>>>        Shunt (sense) resistor value in micro-Ohms.
>>>      default: 100000000
>>>  
>>> +  digital-input-threshold-microvolt:
>>
>> Should this not have an adi vendor prefix, similar to
>> "adi,digital-input-threshold-mode-fixed"?
> 
> Yes.

OK. But I'm not really sure what the rules are for when such a prefix
must be added, so some guidance would be appreciated. There's

- DO use a vendor prefix on device specific property names. Consider if
  properties could be common among devices of the same class.

And my thinking was that a threshold for when a digital input should
count as high/low would be a rather generic thing, so not particularly
device specific.

Also, this very binding has a shunt-resistor-micro-ohms, and the
individual channels have a drive-strength-microamp (granted, that latter
one is a recent one of mine and may have slipped through review?). I can
certainly understand that when a property specifies a raw value to put
into some register (or field), that's very specific to that chip (or
small family of chips) - the adi,ch-func properties fall into that category.

Rasmus




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