linux-kernel - Re: [PATCH v7 2/4] dt-bindings: hwmon: Add binding for max6639

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Message-ID: <dad4d480-8c72-46da-b0ad-4a8235bb03cf@9elements.com>
Date:   Tue, 29 Nov 2022 21:22:22 +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>,
        Roland Stigge <stigge@...com.de>
Cc:     linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org,
        Patrick Rudolph <patrick.rudolph@...ements.com>,
        Marcello Sylvester Bauer <sylv@...v.io>
Subject: Re: [PATCH v7 2/4] dt-bindings: hwmon: Add binding for max6639

Hi Krzysztof,

On 29-11-2022 01:44 pm, Krzysztof Kozlowski wrote:
> On 21/11/2022 13:29, Naresh Solanki wrote:
>> From: Marcello Sylvester Bauer <sylv@...v.io>
>>
>> Add Devicetree binding documentation for Maxim MAX6639 temperature
>> monitor with PWM fan-speed controller.
>>
>> Signed-off-by: Marcello Sylvester Bauer <sylv@...v.io>
>> Signed-off-by: Naresh Solanki <Naresh.Solanki@...ements.com>
>> ---
>>   .../bindings/hwmon/maxim,max6639.yaml         | 93 +++++++++++++++++++
>>   1 file changed, 93 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml b/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml
>> new file mode 100644
>> index 000000000000..da040b11d2ab
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml
>> @@ -0,0 +1,93 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +
>> +$id: http://devicetree.org/schemas/hwmon/maxim,max6639.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Maxim max6639
>> +
>> +maintainers:
>> +  - Roland Stigge <stigge@...com.de>
>> +
>> +description: |
>> +  The MAX6639 is a 2-channel temperature monitor with dual, automatic, PWM
>> +  fan-speed controller.  It monitors its own temperature and one external
>> +  diode-connected transistor or the temperatures of two external diode-connected
>> +  transistors, typically available in CPUs, FPGAs, or GPUs.
>> +
>> +  Datasheets:
>> +    https://datasheets.maximintegrated.com/en/ds/MAX6639-MAX6639F.pdf
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - maxim,max6639
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  '#address-cells':
>> +    const: 1
>> +
>> +  '#size-cells':
>> +    const: 0
>> +
>> +  '#pwm-cells':
>> +    const: 3
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +
>> +patternProperties:
>> +  "^fan@[0-1]$":
>> +    type: object
>> +    description: |
>> +      Represents the two fans and their specific configuration.
>> +
>> +    $ref: fan-common.yaml#
> 
> unevalauatedProperties: false
> 
Sure
>> +
>> +    properties:
>> +      reg:
>> +        description: |
>> +          The fan number.
>> +        items:
>> +          minimum: 0
>> +          maximum: 1
> 
> This is a bit unusual syntax. Drop "items", I think it should be more
> obvious.
> 
Sure
>> +
>> +    required:
>> +      - reg
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    i2c {
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +
>> +        fan1: fan-controller@10 {
>> +            compatible = "maxim,max6639";
>> +            reg = <0x10>;
>> +            #address-cells = <1>;
>> +            #size-cells = <0>;
>> +            #pwm-cells = <3>;
>> +
>> +            fan@0 {
>> +                reg = <0x0>;
>> +                pulses-per-revolution = <2>;
>> +                max-rpm = <4000>;
>> +                target-rpm = <1000>;
>> +                pwms = <&fan1 0 25000 0>;
>> +            };
>> +
>> +            fan@1 {
>> +                reg = <0x1>;
>> +                pulses-per-revolution = <2>;
>> +                max-rpm = <8000>;
>> +                pwms = <&fan1 1 25000 0>;
>> +            };
>> +            };
> 
> Fix indentation.
>
Sure

>> +    };
>> +...
> 
> Best regards,
> Krzysztof
> 
Regards,
Naresh