linux-kernel - Re: [PATCH v3 2/6] net: phy: introduce core support for phy-mode = "10g-qxgmii"

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Message-ID: <20231115-tightness-naturist-459776cff199@squawk>
Date:   Wed, 15 Nov 2023 14:31:32 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Luo Jie <quic_luoj@...cinc.com>
Cc:     andrew@...n.ch, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        hkallweit1@...il.com, linux@...linux.org.uk, corbet@....net,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH v3 2/6] net: phy: introduce core support for phy-mode =
 "10g-qxgmii"

On Wed, Nov 15, 2023 at 10:06:26PM +0800, Luo Jie wrote:
> From: Vladimir Oltean <vladimir.oltean@....com>
> 
> 10G-QXGMII is a MAC-to-PHY interface defined by the USXGMII multiport
> specification. It uses the same signaling as USXGMII, but it multiplexes
> 4 ports over the link, resulting in a maximum speed of 2.5G per port.
> 
> Some in-tree SoCs like the NXP LS1028A use "usxgmii" when they mean
> either the single-port USXGMII or the quad-port 10G-QXGMII variant, and
> they could get away just fine with that thus far. But there is a need to
> distinguish between the 2 as far as SerDes drivers are concerned.
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
> Signed-off-by: Luo Jie <quic_luoj@...cinc.com>
> ---
>  .../devicetree/bindings/net/ethernet-controller.yaml |  1 +

I know it is one line, but bindings need to be in their own patches
please.

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