linux-kernel - Re: [PATCH v6 2/3] dt-bindings: iio: proximity: Add TYHX HX9023S

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Date: Sat, 22 Jun 2024 11:51:18 +0100
From: Conor Dooley <conor@...nel.org>
To: Yasin Lee <yasin.lee.x@...il.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>, yasin.lee.x@...look.com,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-iio@...r.kernel.org
Subject: Re: [PATCH v6 2/3] dt-bindings: iio: proximity: Add TYHX HX9023S

On Sat, Jun 22, 2024 at 01:56:42PM +0800, Yasin Lee wrote:
> 
> On 2024/6/21 18:12, Krzysztof Kozlowski wrote:
> 
> Hi ,Krzysztof
> Thank you for your reply. I have some questions inline.
> 
> Best regards,
> Yasin
> 
> > On 21/06/2024 09:40, Yasin Lee wrote:
> > > A capacitive proximity sensor
> > > 
> > > Signed-off-by: Yasin Lee <yasin.lee.x@...il.com>
> > > ---
> > >   .../bindings/iio/proximity/tyhx,hx9023s.yaml       | 115 +++++++++++++++++++++
> > >   1 file changed, 115 insertions(+)
> > > 
> > > diff --git a/Documentation/devicetree/bindings/iio/proximity/tyhx,hx9023s.yaml b/Documentation/devicetree/bindings/iio/proximity/tyhx,hx9023s.yaml
> > > new file mode 100644
> > > index 000000000000..beca70ce7609
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/iio/proximity/tyhx,hx9023s.yaml
> > > @@ -0,0 +1,115 @@
> > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/iio/proximity/tyhx,hx9023s.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: TYHX HX9023S capacitive proximity sensor
> > > +
> > > +maintainers:
> > > +  - Yasin Lee <yasin.lee.x@...il.com>
> > > +
> > > +description: |
> > > +  TYHX HX9023S proximity sensor. Datasheet can be found here:
> > > +    http://www.tianyihexin.com/ueditor/php/upload/file/20240614/1718336303992081.pdf
> > > +
> > > +allOf:
> > > +  - $ref: /schemas/iio/iio.yaml#
> > Which part of iio.yaml binding do you use here? I cannot find anything,
> > so this looks wrong.	
> > 
> 
> I will remove this reference.
> 
> 
> > > +
> > > +properties:
> > > +  compatible:
> > > +    const: tyhx,hx9023s
> > > +
> > > +  reg:
> > > +    maxItems: 1
> > > +
> > > +  interrupts:
> > > +    description:
> > > +      Generated by device to announce preceding read request has finished
> > > +      and data is available or that a close/far proximity event has happened.
> > > +    maxItems: 1
> > > +
> > > +  vdd-supply: true
> > > +
> > > +  "#address-cells":
> > > +    const: 1
> > > +
> > > +  "#size-cells":
> > > +    const: 0
> > > +
> > > +patternProperties:
> > > +  "^channel@[0-4]$":
> > > +    $ref: /schemas/iio/adc/adc.yaml
> > > +    type: object
> > > +
> > > +    properties:
> > > +      reg:
> > > +        minimum: 0
> > > +        maximum: 4
> > > +        description: The channel number.
> > > +
> > > +      input-channel:
> > Isn't this duplicating single-channel property?
> > 
> > Where is this property defined (which common schema)?
> > 
> |input-channel| is indeed intended for single-ended configuration, but I
> couldn't find a definition
> 
> or reference for |single-channel| anywhere. If possible, should I rename
> |input-channel| to |single-channel|?

Single-channel is new, it should be the next branch of the iio tree and
in linux-next.

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