Re: [PATCH v3 1/5] dt-bindings: iio: adc: Add ltc2378

[Marcelo Schmitt]

On 06/17, David Lechner wrote:
> On 6/16/26 9:03 PM, Marcelo Schmitt wrote:
> > Document how to describe LTC2378-20 and similar ADCs in device tree.
> > 
> 
> ...
> 
> > +  vdd-supply:
> > +    description: A 2.5V supply that powers the chip (VDD).
> > +
> > +  ovdd-supply:
> > +    description:
> > +      A 1.71V to 5.25V supply that sets the logic level for digital interface.
> > +
> > +  ref-supply:
> > +    description:
> > +      A 2.5V to 5.1V supply for the reference input (REF).
> > +
> > +  cnv-gpios:
> > +    description:
> > +      When provided, this property indicates the GPIO that is connected to the
> > +      CNV pin.
> > +    maxItems: 1
> 
> Missing pwms property for when CNV pin is connected to PWM.

Ah, thanks for pointing that out. Will add that in v4.

> 
> > +
> > +  interrupts:
> > +    description:
> > +      Interrupt for signaling the completion of conversion results. The active
> > +      low signal provided on the BUSY pin asserts when ADC conversions finish.
> > +    maxItems: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - vdd-supply
> > +  - ovdd-supply
> > +  - ref-supply
> 
> I only looked at LTC2338-18, but it has a REFIN, which is optional.
> Nothing named REF that is required.
> 
Hmm, I think that's the only device that has it differently. Will add allOf/if
properties to differentiate these.

Thanks,
Marcelo