linux-kernel - Re: [PATCH net-next v5 0/6] net-next: dsa: mt7530: add support for MT7531

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Date:   Fri, 11 Sep 2020 19:47:01 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Landen Chao <landen.chao@...iatek.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        frank-w@...lic-files.de, opensource@...rst.com, dqfext@...il.com
Subject: Re: [PATCH net-next v5 0/6] net-next: dsa: mt7530: add support for
 MT7531

On Fri, Sep 11, 2020 at 09:48:50PM +0800, Landen Chao wrote:
> This patch series adds support for MT7531.
>
> MT7531 is the next generation of MT7530 which could be found on Mediatek
> router platforms such as MT7622 or MT7629.
>
> It is also a 7-ports switch with 5 giga embedded phys, 2 cpu ports, and
> the same MAC logic of MT7530. Cpu port 6 only supports SGMII interface.
> Cpu port 5 supports either RGMII or SGMII in different HW SKU, but cannot
> be muxed to PHY of port 0/4 like mt7530. Due to support for SGMII
> interface, pll, and pad setting are different from MT7530.
>
> MT7531 SGMII interface can be configured in following mode:
> - 'SGMII AN mode' with in-band negotiation capability
>     which is compatible with PHY_INTERFACE_MODE_SGMII.
> - 'SGMII force mode' without in-band negotiation
>     which is compatible with 10B/8B encoding of
>     PHY_INTERFACE_MODE_1000BASEX with fixed full-duplex and fixed pause.
> - 2.5 times faster clocked 'SGMII force mode' without in-band negotiation
>     which is compatible with 10B/8B encoding of
>     PHY_INTERFACE_MODE_2500BASEX with fixed full-duplex and fixed pause.
>
> v4 -> v5
> - Add fixed-link node to dsa cpu port in dts file by suggestion of
>   Vladimir Oltean.

Thank you!

-Vladimir