Re: [PATCH 0/2] iio: Add support for TI ADS1X18 ADCs

[David Lechner]

On 11/21/25 11:16 AM, Kurt Borja wrote:
> Hi,
> 
> This series adds a new driver for TI ADS1X18 SPI devices.
> 
> This is my first time contributing to the IIO subsystem and making
> dt-bindings documentation, so (don't) go easy on me :p.

I actually had these parts on my radar, so happy to help you out.
Unfortunately, I don't have the hardware for testing though.

The first thing I was going to do was check the existing drivers
to make sure that there isn't one already that has a compatible
register layout. I have a feeling we won't find one, but would be
good to mention that in the cover to justify adding a new driver.

There are a couple of similar TI ADCs on the mailing list right
now, but they are IMHO just slightly too different to share a
driver, but would be good to look at just to make things are
consistent on a high level.

> 
> As explained in Patch 2 changelog, the DRDY interrupt line is shared
> with the MOSI pin. This awkward quirk is also found on some Analog
> Devices sigma-delta SPI ADCs, so the interrupt and trigger design is
> inspired by those.

Yup, that seems to be the best way we know how to handle this.