linux-kernel - Re: [PATCH v3 2/3] net: dsa: mv88e6xxx: add support for MV88E6020 switch

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Date:   Tue, 3 Jan 2023 09:46:33 +0100
From:   Lukasz Majewski <lukma@...x.de>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Vladimir Oltean <olteanv@...il.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexander Duyck <alexander.duyck@...il.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Matthias Schiffer <matthias.schiffer@...tq-group.com>
Subject: Re: [PATCH v3 2/3] net: dsa: mv88e6xxx: add support for MV88E6020
 switch

Hi Andrew,

> On Mon, Jan 02, 2023 at 04:02:08PM +0100, Lukasz Majewski wrote:
> > From: Matthias Schiffer <matthias.schiffer@...tq-group.com>
> > 
> > A mv88e6250 family (i.e. LinkStreet) switch with 2 PHY and RMII
> > ports and no PTP support.  
> 
> >  static const struct mv88e6xxx_info mv88e6xxx_table[] = {
> > +	[MV88E6020] = {
> > +		.prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6020,
> > +		.family = MV88E6XXX_FAMILY_6250,
> > +		.name = "Marvell 88E6020",
> > +		.num_databases = 64,
> > +		.num_ports = 7,
> > +		.num_internal_phys = 5,  
> 
> You say in the commit message there are two PHYs, yet you have 5 here?
> 

It looks like mine copy-paste error.

In the documentation there is stated that the 88E6020 device contains
two 10BASE-T/100BASE-TX transceivers (PHYs) and four independent Fast
Ethernet MACs (so it is a 2+2 device).

The 88E6071 is 5+2 device, so I'm going to correct this value to 2.
Also num_ports needs to be updated to 4.

>     Andrew


Best regards,

Lukasz Majewski

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