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Message-ID: <840daaaf-5c0b-e462-eec6-b87c54036acc@9elements.com>
Date:   Tue, 29 Nov 2022 21:15:14 +0530
From:   Naresh Solanki <naresh.solanki@...ements.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        devicetree@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>,
        Jean Delvare <jdelvare@...e.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org,
        Patrick Rudolph <patrick.rudolph@...ements.com>
Subject: Re: [PATCH v6 1/3] dt-bindings: hwmon: fan: Add fan binding to schema

Hi Krzysztof,

On 29-11-2022 01:38 pm, Krzysztof Kozlowski wrote:
> On 16/11/2022 22:36, Naresh Solanki wrote:
>> Add common fan properties bindings to a schema.
>>
>> Bindings for fan controllers can reference the common schema for the
>> fan
>>
>> child nodes:
>>
>>    patternProperties:
>>      "^fan@[0-2]":
>>        type: object
>>        $ref: fan-common.yaml#
>>
>> Signed-off-by: Naresh Solanki <Naresh.Solanki@...ements.com>
>> ---
>>   .../devicetree/bindings/hwmon/fan-common.yaml | 42 +++++++++++++++++++
>>   1 file changed, 42 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/hwmon/fan-common.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/hwmon/fan-common.yaml b/Documentation/devicetree/bindings/hwmon/fan-common.yaml
>> new file mode 100644
>> index 000000000000..1954882eed77
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/hwmon/fan-common.yaml
>> @@ -0,0 +1,42 @@
>> +# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/hwmon/fan-common.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Common fan properties
> 
> If there is going to be resend - capitalize title, so:
> 
> Common Fan Properties
> 
Sure
>> +
>> +maintainers:
>> +  - Naresh Solanki <naresh.solanki@...ements.com>
>> +
>> +properties:
>> +  max-rpm:
>> +    description:
>> +      Max RPM supported by fan.
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +
>> +  pulses-per-revolution:
>> +    description:
>> +      The number of pulse from fan sensor per revolution.
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +
>> +  target-rpm:
>> +    description:
>> +      Target RPM the fan should be configured during driver probe.
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +
>> +  pwms:
>> +    description:
>> +      PWM provider.
> 
> Isn't this object? If so, maybe:
>    type: object
With make dt_binding_check, I'm getting error for this.
Looking at other available examples in documentation, type object is not 
used.

Example:
   pwms:
     maxItems: 1

One pwm per fan.
> 
> 
> 
> Best regards,
> Krzysztof
> 
Regards,
Naresh

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