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Message-ID: <20230519143713.1ac9c7a1@thinkpad>
Date: Fri, 19 May 2023 14:38:36 +0200
From: Marek BehĂșn <kabel@...nel.org>
To: Andrew Lunn <andrew@...n.ch>
Cc: Alexis Lothoré <alexis.lothore@...tlin.com>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Richard Cochran <richardcochran@...il.com>,
netdev@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com,
paul.arola@...us.com, scott.roberts@...us.com
Subject: Re: [PATCH net-next 2/2] net: dsa: mv88e6xxx: enable support for
88E6361 switch
On Thu, 18 May 2023 14:58:00 +0200
Andrew Lunn <andrew@...n.ch> wrote:
> > >> + [MV88E6361] = {
> > >> + .prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6361,
> > >> + .family = MV88E6XXX_FAMILY_6393,
> > >> + .name = "Marvell 88E6361",
> > >> + .num_databases = 4096,
> > >> + .num_macs = 16384,
> > >> + .num_ports = 11,
> > >> + /* Ports 1, 2 and 8 are not routed */
> > >> + .invalid_port_mask = BIT(1) | BIT(2) | BIT(8),
> > >> + .num_internal_phys = 5,
> > >
> > > Which ports have internal PHYs? 2, 3, 4, 5, 6, 7 ? What does
> > > mv88e6xxx_phy_is_internal() return for these ports, and
> > > mv88e6xxx_get_capsmv88e6xxx_get_caps()? I'm wondering if you actually
> > > need to list 8 here?
> >
> > Indeed there is something wrong here too. I need to tune
> > mv88e6393x_phylink_get_caps to reflect 88E6361 differences.
> >
> > As stated above, port 3 to 7 are the ones with internal PHY.
> > For mv88e6xxx_phy_is_internal, I see that it is merely comparing the port index
> > to the number of internal phys, so in this case it would advertise (wrongly)
> > that ports 0 to 4 have internal phys.
>
> Ports 1 and 2 should hopefully be protected by the
> invalid_port_mask. It should not even be possible to create those
> ports. port 0 is interesting, and possibly currently broken on
> 6393. Please take a look at that.
Why would port 0 be broken on 6393x ?
Marek
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