linux-kernel - Re: [PATCH v2 2/4] dt-bindings: hwmon/pmbus: Add mps,mpq7932 power-management IC

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Date:   Thu, 1 Dec 2022 17:43:29 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Saravanan Sekar <saravanan@...umiz.com>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, marten.lindahl@...s.com,
        jdelvare@...e.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org
Subject: Re: [PATCH v2 2/4] dt-bindings: hwmon/pmbus: Add mps,mpq7932
 power-management IC

On 01/12/2022 17:38, Saravanan Sekar wrote:
>>>> Plus additional comment for the driver (and related to bindings) was
>>>> that this is not hwmon but a regulator driver. Why putting regulator
>>>> driver in hwmon?
>>>>
>>>
>>> Turns out this is primarily a hardware monitoring driver, like the drivers
>>> for all other PMBus chips. Regulator support is actually optional; the driver
>>> works perfectly well with CONFIG_REGULATOR=n (except that it needs some
>>> #ifdefs to address that situation).
>>
>> OK, this would explain location  of the driver. However the bindings are
>> saying:
>> "Monolithic Power System MPQ7932 PMIC"
>> and PMIC is not mainly a hwmon device, even if it has such capabilities.
>> It might be missing description and proper title... or might be misplaced.
>>
> 
> Indeed it is PMIC chip. I think this is not the first and not sure title 
> has to be changed for hwmon subsystem.
> 
> bindings/hwmon/pmbus/ti,lm25066.yaml
> title: National Semiconductor/Texas Instruments LM250x6/LM506x 
> power-management ICs

Then I propose to put it in regulator directory.

Best regards,
Krzysztof