linux-kernel - Re: [PATCH 1/2] dt-bindings: hwmon: Introduce common properties

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Date:   Thu, 23 Dec 2021 09:19:43 +0000
From:   Paul Cercueil <paul@...pouillou.net>
To:     Rob Herring <robh@...nel.org>
Cc:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: hwmon: Introduce common properties

Hi Rob,

Le mer., déc. 22 2021 at 15:36:23 -0400, Rob Herring <robh@...nel.org> 
a écrit :
> On Tue, Dec 21, 2021 at 05:50:28PM +0000, Paul Cercueil wrote:
>>  Introduce a file for common properties of hwmon sensors.
>> 
>>  As of now it contains only the "label" property, which can contain a
>>  descriptive label that allows to uniquely identify a device within 
>> the
>>  system.
> 
> I don't think we need this. What we need is a global (in dtschema)
> type definition and then any users just add 'label: true'.

Well, users would also need to set an actual label, otherwise this 
defeats the point :)

Cheers,
-Paul

> 
>> 
>>  Signed-off-by: Paul Cercueil <paul@...pouillou.net>
>>  ---
>>   .../devicetree/bindings/hwmon/common.yaml     | 31 
>> +++++++++++++++++++
>>   1 file changed, 31 insertions(+)
>>   create mode 100644 
>> Documentation/devicetree/bindings/hwmon/common.yaml
>> 
>>  diff --git a/Documentation/devicetree/bindings/hwmon/common.yaml 
>> b/Documentation/devicetree/bindings/hwmon/common.yaml
>>  new file mode 100644
>>  index 000000000000..997f74127d8c
>>  --- /dev/null
>>  +++ b/Documentation/devicetree/bindings/hwmon/common.yaml
>>  @@ -0,0 +1,31 @@
>>  +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>>  +%YAML 1.2
>>  +---
>>  +$id: http://devicetree.org/schemas/hwmon/common.yaml#
>>  +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>  +
>>  +title: Common properties for hwmon sensors
>>  +
>>  +maintainers:
>>  +  - Jean Delvare <jdelvare@...e.com>
>>  +  - Guenter Roeck <linux@...ck-us.net>
>>  +
>>  +description: |
>>  +  This document defines device tree properties common to several 
>> hwmon
>>  +  sensors. It doesn't constitue a device tree binding 
>> specification by itself but
>>  +  is meant to be referenced by device tree bindings.
>>  +
>>  +  When referenced from sensor tree bindings the properties defined 
>> in this
>>  +  document are defined as follows. The sensor tree bindings are 
>> responsible for
>>  +  defining whether each property is required or optional.
>>  +
>>  +properties:
>>  +  label:
>>  +    $ref: /schemas/types.yaml#/definitions/string
>>  +    description: >
>>  +      Descriptive label that allows to uniquely identify a device 
>> within
>>  +      the system.
>>  +
>>  +additionalProperties: true
>>  +
>>  +...
>>  --
>>  2.34.1
>> 
>>