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Message-ID: <15faebc0-9b20-4d0f-a946-c047bc6ae564@amperemail.onmicrosoft.com>
Date: Tue, 16 Apr 2024 11:38:53 +0700
From: Chanh Nguyen <chanh@...eremail.onmicrosoft.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 Chanh Nguyen <chanh@...amperecomputing.com>, Jean Delvare
 <jdelvare@...e.com>, Guenter Roeck <linux@...ck-us.net>,
 Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Justin Ledford
 <justinledford@...gle.com>, devicetree@...r.kernel.org,
 linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org,
 OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
 Open Source Submission <patches@...erecomputing.com>
Cc: Phong Vo <phong@...amperecomputing.com>,
 Thang Nguyen <thang@...amperecomputing.com>,
 Quan Nguyen <quan@...amperecomputing.com>
Subject: Re: [PATCH v2 1/3] dt-bindings: hwmon: Add maxim max31790 bindings



On 14/04/2024 13:03, Krzysztof Kozlowski wrote:
> On 14/04/2024 06:22, Chanh Nguyen wrote:
>> Add a device tree bindings for max31790 device.
>>
> 
> Nothing improved in commit msg, where is the rationale of split of bindings?
> 

Yes Krzysztof, I will use "tach-ch" property from the fan-common.yaml to 
solve my case. So I will not need a split of bindings.

Finally, my patch series will only be two patches. They are 
"dt-bindings: hwmon: Add maxim max31790" and "hwmon: (max31790): Support 
config PWM output becomes TACH".

I'm going to update that in the patch v3 series.

> A nit, subject: drop second/last, redundant "bindings". The
> "dt-bindings" prefix is already stating that these are bindings.
> See also:
> https://elixir.bootlin.com/linux/v6.7-rc8/source/Documentation/devicetree/bindings/submitting-patches.rst#L18
> 

Thank Krzysztof, I'll drop "bindings" in commit msg.

>> Signed-off-by: Chanh Nguyen <chanh@...amperecomputing.com>
>> ---
>> Changes in v2:
>>   - Update filename of the maxim,max31790.yaml                            [Krzysztof]
>>   - Add the common fan schema to $ref                                     [Krzysztof]
>>   - Update the node name to "fan-controller" in maxim,max31790.yaml       [Krzysztof]
>>   - Drop "driver" in commit title                                         [Krzysztof]
>> ---
>>   .../bindings/hwmon/maxim,max31790.yaml        | 52 +++++++++++++++++++
>>   1 file changed, 52 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml b/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml
>> new file mode 100644
>> index 000000000000..a561e5a3e9e4
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml
>> @@ -0,0 +1,52 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/hwmon/maxim,max31790.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: The Maxim MAX31790 Fan Controller
>> +
>> +maintainers:
>> +  - Guenter Roeck <linux@...ck-us.net>
>> +
>> +description: >
>> +  The MAX31790 controls the speeds of up to six fans using six
>> +  independent PWM outputs. The desired fan speeds (or PWM duty cycles)
>> +  are written through the I2C interface.
>> +
>> +  Datasheets:
>> +    https://datasheets.maximintegrated.com/en/ds/MAX31790.pdf
>> +
>> +properties:
>> +  compatible:
>> +    const: maxim,max31790
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  resets:
>> +    maxItems: 1
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +
>> +allOf:
>> +  - $ref: fan-common.yaml#
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    i2c {
>> +      #address-cells = <1>;
>> +      #size-cells = <0>;
>> +
>> +      fan-controller@20 {
>> +        compatible = "maxim,max31790";
>> +        reg = <0x20>;
> 
> Make the example complete - add all properties, like clocks, resets and
> any others which are applicable.
> 

Ok Krzysztof, I'll update that in the patch v3

> Best regards,
> Krzysztof
> 

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