linux-kernel - Re: [RFC PATCH v1 1/7] dt-bindings: power: reset: add generic PSCR binding trackers

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Message-ID: <20240119175405.GA163482@pengutronix.de>
Date: Fri, 19 Jan 2024 18:54:05 +0100
From: Oleksij Rempel <o.rempel@...gutronix.de>
To: Rob Herring <robh@...nel.org>
Cc: Sebastian Reichel <sre@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	kernel@...gutronix.de, linux-kernel@...r.kernel.org,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Zhang Rui <rui.zhang@...el.com>, Lukasz Luba <lukasz.luba@....com>,
	linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
	Søren Andersen <san@...v.dk>
Subject: Re: [RFC PATCH v1 1/7] dt-bindings: power: reset: add generic PSCR
 binding trackers

On Fri, Jan 19, 2024 at 11:28:38AM -0600, Rob Herring wrote:
> On Fri, Jan 19, 2024 at 02:25:15PM +0100, Oleksij Rempel wrote:
> > Add binding for Power State Change Reason (PSCR) subsystem
> 
> Why? 
> 
> How is this different from the reboot reason binding?

I was not able to find "reboot reason", you probably refer to "reboot
mode".

Reboot Mode:
 Purpose: Dictates how the system should reboot (e.g., normal, recovery,
   bootloader).
 Usage: Provides instructions for the next boot mode.
 Scenario: Utilized in planned reboots or software-triggered reset scenarios.

PSCR (Power State Change Reasons):
 Purpose: Logs the reason behind a power state change (e.g., voltage drop,
   over-temperature).
 Usage: Used for rapid logging and post-event analysis, potentially informing
   automatic decision-making in subsequent boots.
 Scenario: Critical in abrupt power-down situations where immediate, detailed
   decision-making is not possible.

Regards,
Oleksij
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