linux-kernel - Re: [PATCH 2/9] dt-bindings: iio: dac: adi-axi-adc: Add ad7606 variant

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Message-ID: <20241121-wackiness-threaten-b53d2a27fbd9@spud>
Date: Thu, 21 Nov 2024 19:53:53 +0000
From: Conor Dooley <conor@...nel.org>
To: David Lechner <dlechner@...libre.com>
Cc: Guillaume Stols <gstols@...libre.com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Michael Hennerich <Michael.Hennerich@...log.com>,
	Jonathan Cameron <jic23@...nel.org>, Nuno Sa <nuno.sa@...log.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, jstephan@...libre.com,
	aardelean@...libre.com, adureghello@...libre.com
Subject: Re: [PATCH 2/9] dt-bindings: iio: dac: adi-axi-adc: Add ad7606
 variant

On Thu, Nov 21, 2024 at 10:57:44AM -0600, David Lechner wrote:
> On 11/21/24 4:18 AM, Guillaume Stols wrote:
> > A new compatible is added to reflect the specialized version of the HDL
> > that is not covered by the IIO backend paradigm: We use the parallel
> 
> It still is being used as an IIO backend, so I would leave out the
> phrase "that is not covered by the IIO backend paradigm".
> 
> > interface to write the ADC's registers, and accessing this interface
> > requires to use ADI_AXI_REG_CONFIG_RD,ADI_AXI_REG_CONFIG_WR and
> > ADI_AXI_REG_CONFIG_CTRL in a custom fashion.
> > 
> > Signed-off-by: Guillaume Stols <gstols@...libre.com>
> > ---
> >  Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml | 7 +++++++
> >  1 file changed, 7 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml b/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
> > index e1f450b80db2..43bc0440c678 100644
> > --- a/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
> > +++ b/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
> > @@ -17,13 +17,20 @@ description: |
> >    interface for the actual ADC, while this IP core will interface
> >    to the data-lines of the ADC and handle the streaming of data into
> >    memory via DMA.
> > +  In some cases, the AXI ADC interface is used to perform specialized
> > +  operation to a particular ADC, e.g access the physical bus through
> > +  some special register to write ADC registers.
> > +  In this case, a different compatible is used, and the driver behaves
> 
> Quick, delete the word "driver" before Krzysztof sees it. :-p

And also perhaps worth mentioning under the --- line that the x in the
compatible is not a wildcard, for similar reasons ;)

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