Re: Reading ADC that comes from a multiplexer

[Jonathan Cameron <jic23@kernel.org>]

On Fri, 24 Sep 2021 11:41:38 -0300
Fabio Estevam <festevam@gmail.com> wrote:

> Hi Jonathan,
> 
> On Thu, Sep 23, 2021 at 7:29 AM Jonathan Cameron
> <Jonathan.Cameron@huawei.com> wrote:
> 
> > > The beaglebone dts uses some undocumented properties such as:
> > > iio-channels and iio-channel-names.  
> >
> > Some of this comes from the dts-schema repo.  We haven't been strict in
> > adding the entries to individual ADCs until they actually use them - which
> > has the advantage it gives us a window to think about the of_xlate (see below)
> >
> > https://github.com/devicetree-org/dt-schema/blob/main/meta-schemas/iio.yaml  
> 
> On this document, we have "io-channels" and "io-channel-names.
> 
> What I wanted to say is that in
> arch/arm/boot/dts/am5729-beagleboneai.dts we have:
> 
> "iio-channels" and "iio-channel-names" (Note the 'iio' versus 'io').
> 
> This is what I mentioned as undocumented properties.
> 
> Maybe I can send a patch fixing it.
Ah!  Got you.  That definitely seems wrong so a fix would be welcome.

Thanks,

Jonathan

> 
> On my imx6 board all is working fine now.
> 
> Thanks,
> 
> Fabio Estevam