linux-kernel - Re: [PATCH v3 1/2] regulator: dt-bindings: pca9450: add PMIC_RST

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Message-ID: <ecde24c3-55ba-45cc-8af9-94504dc4dcb9@kernel.org>
Date: Thu, 2 May 2024 09:54:29 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Fabio Aiuto <fabio.aiuto@...icam.com>
Cc: Mark Brown <broonie@...nel.org>, Liam Girdwood <lgirdwood@...il.com>,
 Rob Herring <robh@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 Matteo Lisi <matteo.lisi@...icam.com>,
 Mirko Ardinghi <mirko.ardinghi@...icam.com>
Subject: Re: [PATCH v3 1/2] regulator: dt-bindings: pca9450: add PMIC_RST_B
 warm reset property

On 15/04/2024 12:59, Fabio Aiuto wrote:
> Dear Krzysztof,
> 
> Il Sat, Apr 13, 2024 at 11:40:18PM +0200, Krzysztof Kozlowski ha scritto:
>> On 13/04/2024 19:10, Fabio Aiuto wrote:
>>> Dear Krzysztof,
>>>
>>> Il Sat, Apr 13, 2024 at 12:58:35PM +0200, Krzysztof Kozlowski ha scritto:
>>>> On 12/04/2024 09:21, Fabio Aiuto wrote:
>>>>> Dear Krzysztof,
>>>>>
>>>>> Il Thu, Apr 11, 2024 at 09:52:12PM +0200, Krzysztof Kozlowski ha scritto:
>>>>>> On 11/04/2024 18:58, Fabio Aiuto wrote:
> <snip> 
>> I don't understand what is the use case. You wrote runtime does not
>> solve your use case. What is the use case?
> 
> We experimented problems on some boards with SD card, if a cold reset
> is done when the card is powered back on it completely freezes, the way
> devices behave when unpowered for such short intervals is design specific,
> not an OS policy.
> 

Then describe the actual hardware issue, not instruct OS how to behave.
In the property name and description.

Best regards,
Krzysztof