linux-kernel - Re: [PATCH] net: mvneta: Fix Serdes configuration for 2.5Gbps modes

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Message-ID: <20200609132848.GA1076317@lunn.ch>
Date:   Tue, 9 Jun 2020 15:28:48 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Sascha Hauer <s.hauer@...gutronix.de>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        kernel@...gutronix.de
Subject: Re: [PATCH] net: mvneta: Fix Serdes configuration for 2.5Gbps modes

On Tue, Jun 09, 2020 at 03:11:52PM +0200, Sascha Hauer wrote:
> The Marvell MVNETA Ethernet controller supports a 2.5Gbps SGMII mode
> called DRSGMII. Depending on the Port MAC Control Register0 PortType
> setting this seems to be either an overclocked SGMII mode or 2500BaseX.
> 
> This patch adds the necessary Serdes Configuration setting for the
> 2.5Gbps modes. There is no phy interface mode define for overclocked
> SGMII, so only 2500BaseX is handled for now.
> 
> As phy_interface_mode_is_8023z() returns true for both
> PHY_INTERFACE_MODE_1000BASEX and PHY_INTERFACE_MODE_2500BASEX we
> explicitly test for 1000BaseX instead of using
> phy_interface_mode_is_8023z() to differentiate the different
> possibilities.

Hi Sascha

This seems like it should have a Fixes: tag, and be submitted to the
net tree. Please see the Networking FAQ.

Otherwise it looks O.K.

    Andrew