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

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Message-ID: <e86812b3-a3aa-4bdb-9b32-a0339f0f76b5@kernel.org>
Date: Thu, 11 Apr 2024 21:52:12 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Fabio Aiuto <fabio.aiuto@...icam.com>, Mark Brown <broonie@...nel.org>,
 Liam Girdwood <lgirdwood@...il.com>, Rob Herring <robh@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: Robin Gong <yibin.gong@....com>, 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 11/04/2024 18:58, Fabio Aiuto wrote:
> Add property to trigger warm reset on PMIC_RST_B assertion
> 

That's rather vague and does not tell me much why this is supposed to be
board level configuration. It sounds more like a debugging feature:
during development you want to retain memory contents for pstore etc.
Then I could imagine this should be turned runtime, e.g. via
sysfs/debugfs, because for example you want to start inspecting a
customer's device.

Best regards,
Krzysztof