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

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Date: Sun, 23 Jun 2024 08:50:07 +0800
From: Yasin Lee <yasin.lee.x@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, Conor Dooley <conor@...nel.org>
Cc: 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 2024/6/23 02:04, Krzysztof Kozlowski wrote:
> On 22/06/2024 14:35, Yasin Lee wrote:
>> On 2024/6/22 18:51, Conor Dooley wrote:
>>> 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.
>> Hi Conor，
>>
>> Thank you for informing me. I plan to temporarily add a prefix to this
>> attribute to distinguish it and update it in the future. Is this the
>> correct approach?
> No, because there is no need. You are supposed to work on maintainer
> tree (linux-next works usually as well).
>
> Best regards,
> Krzysztof

Hi Krzysztof,

Understood, Thank you for the reply, I will reference single-channel 
directly as I do with diff-channel.

Best regards，

Yasin