linux-kernel - Re: [PATCH net-next v8 12/13] net: pse-pd: tps23881: Add support for static port priority feature

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Message-ID: <aAJQe9Far8lCTzCT@pengutronix.de>
Date: Fri, 18 Apr 2025 15:15:39 +0200
From: Oleksij Rempel <o.rempel@...gutronix.de>
To: Kory Maincent <kory.maincent@...tlin.com>
Cc: Andrew Lunn <andrew@...n.ch>, "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jonathan Corbet <corbet@....net>,
	Donald Hunter <donald.hunter@...il.com>,
	Rob Herring <robh@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>,
	Simon Horman <horms@...nel.org>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	netdev@...r.kernel.org, linux-doc@...r.kernel.org,
	Kyle Swenson <kyle.swenson@....tech>,
	Dent Project <dentproject@...uxfoundation.org>,
	kernel@...gutronix.de,
	Maxime Chevallier <maxime.chevallier@...tlin.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v8 12/13] net: pse-pd: tps23881: Add support for
 static port priority feature

On Wed, Apr 16, 2025 at 03:44:27PM +0200, Kory Maincent wrote:
> From: Kory Maincent (Dent Project) <kory.maincent@...tlin.com>
> 
> This patch enhances PSE callbacks by introducing support for the static
> port priority feature. It extends interrupt management to handle and report
> detection, classification, and disconnection events. Additionally, it
> introduces the pi_get_pw_req() callback, which provides information about
> the power requested by the Powered Devices.
> 
> Interrupt support is essential for the proper functioning of the TPS23881
> controller. Without it, after a power-on (PWON), the controller will
> no longer perform detection and classification. This could lead to
> potential hazards, such as connecting a non-PoE device after a PoE device,
> which might result in magic smoke.

Yey! There are never too many warnings! :D

> Signed-off-by: Kory Maincent (Dent Project) <kory.maincent@...tlin.com>

Reviewed-by: Oleksij Rempel <o.rempel@...gutronix.de>
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