linux-kernel - Re: [PATCH net-next v3 5/6] net: dsa: microchip: add support for side MDIO interface in LAN937x

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Message-ID: <682c0723-f9f6-466c-a33b-b364379403a0@lunn.ch>
Date: Tue, 5 Nov 2024 19:21:01 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Oleksij Rempel <o.rempel@...gutronix.de>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Vladimir Oltean <olteanv@...il.com>,
	Woojung Huh <woojung.huh@...rochip.com>,
	Arun Ramadoss <arun.ramadoss@...rochip.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Rob Herring <robh+dt@...nel.org>, kernel@...gutronix.de,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	UNGLinuxDriver@...rochip.com,
	"Russell King (Oracle)" <linux@...linux.org.uk>,
	devicetree@...r.kernel.org, Marek Vasut <marex@...x.de>
Subject: Re: [PATCH net-next v3 5/6] net: dsa: microchip: add support for
 side MDIO interface in LAN937x

On Tue, Nov 05, 2024 at 10:09:43AM +0100, Oleksij Rempel wrote:
> Implement side MDIO channel support for LAN937x switches, providing an
> alternative to SPI for PHY management alongside existing SPI-based
> switch configuration. This is needed to reduce SPI load, as SPI can be
> relatively expensive for small packets compared to MDIO support.
> 
> Also, implemented static mappings for PHY addresses for various LAN937x
> models to support different internal PHY configurations. Since the PHY
> address mappings are not equal to the port indexes, this patch also
> provides PHY address calculation based on hardware strapping
> configuration.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew