linux-kernel - Re: [PATCH 2/2] net: ethernet: mvneta: Add 2500BaseX support for SoCs without comphy

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Message-Id: <20200618.200016.309123510624309005.davem@davemloft.net>
Date:   Thu, 18 Jun 2020 20:00:16 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     s.hauer@...gutronix.de
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, thomas.petazzoni@...tlin.com,
        kernel@...gutronix.de, linux@...linux.org.uk
Subject: Re: [PATCH 2/2] net: ethernet: mvneta: Add 2500BaseX support for
 SoCs without comphy

From: Sascha Hauer <s.hauer@...gutronix.de>
Date: Tue, 16 Jun 2020 10:31:40 +0200

> The older SoCs like Armada XP support a 2500BaseX mode in the datasheets
> referred to as DR-SGMII (Double rated SGMII) or HS-SGMII (High Speed
> SGMII). This is an upclocked 1000BaseX mode, thus
> PHY_INTERFACE_MODE_2500BASEX is the appropriate mode define for it.
> adding support for it merely means writing the correct magic value into
> the MVNETA_SERDES_CFG register.
> 
> Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>

Applied.