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From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: "Marek Behún" <kabel@kernel.org>
Cc: Vladimir Oltean <olteanv@gmail.com>,
	netdev@vger.kernel.org, pavana.sharma@digi.com,
	vivien.didelot@gmail.com, f.fainelli@gmail.com, kuba@kernel.org,
	lkp@intel.com, davem@davemloft.net, ashkan.boldaji@digi.com,
	andrew@lunn.ch, Chris Packham <chris.packham@alliedtelesis.co.nz>
Subject: Re: [PATCH net-next v14 5/6] net: dsa: mv88e6xxx: Add support for mv88e6393x family of Marvell
Date: Tue, 12 Jan 2021 16:29:09 +0000	[thread overview]
Message-ID: <20210112162909.GD1551@shell.armlinux.org.uk> (raw)
In-Reply-To: <20210112170226.3f2009bd@kernel.org>

On Tue, Jan 12, 2021 at 05:02:26PM +0100, Marek Behún wrote:
> > > +static void mv88e6393x_phylink_validate(struct mv88e6xxx_chip *chip, int port,
> > > +					unsigned long *mask,
> > > +					struct phylink_link_state *state)
> > > +{
> > > +	if (port == 0 || port == 9 || port == 10) {
> > > +		phylink_set(mask, 10000baseT_Full);
> > > +		phylink_set(mask, 10000baseKR_Full);  
> > 
> > I think I understand the reason for declaring 10GBase-KR support in
> > phylink_validate, in case the PHY supports that link mode on the media
> > side, but...
> 
> Hmm, yes, maybe KR shouldn't be here, but then why is it in
> mv88e6390x_phylink_validate?

I'm seriously thinking about changing the phylink_validate() interface
such that the question of which link _modes_ are supported no longer
comes up with MAC drivers, but instead MAC drivers say what interface
modes, speeds for each interface mode, duplexes for each speed are
supported.

There are certainly PHYs out there that take XAUI/RXAUI on the host
side and provide 10GBASE-KR on the "media" side. VSC8489 is an
example of such a PHY.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!

  reply	other threads:[~2021-01-12 16:30 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-11  1:21 [PATCH net-next v14 0/6] Add support for mv88e6393x family of Marvell Marek Behún
2021-01-11  1:21 ` [PATCH net-next v14 1/6] dt-bindings: net: Add 5GBASER phy interface Marek Behún
2021-01-11 16:41   ` Andrew Lunn
2021-01-11  1:21 ` [PATCH net-next v14 2/6] net: phy: Add 5GBASER interface mode Marek Behún
2021-01-11 16:48   ` Russell King - ARM Linux admin
2021-01-11 17:49     ` Marek Behún
2021-01-11  1:21 ` [PATCH net-next v14 3/6] net: dsa: mv88e6xxx: Change serdes lane parameter type from u8 type to int Marek Behún
2021-01-12 10:53   ` Vladimir Oltean
2021-01-11  1:21 ` [PATCH net-next v14 4/6] net: dsa: mv88e6xxx: wrap .set_egress_port method Marek Behún
2021-01-11  5:57   ` Pavana Sharma
2021-01-12 10:53   ` Vladimir Oltean
2021-01-11  1:21 ` [PATCH net-next v14 5/6] net: dsa: mv88e6xxx: Add support for mv88e6393x family of Marvell Marek Behún
2021-01-12 11:11   ` Vladimir Oltean
2021-01-12 16:02     ` Marek Behún
2021-01-12 16:29       ` Russell King - ARM Linux admin [this message]
2021-01-12 16:37         ` Marek Behún
2021-01-12 18:06         ` Marek Behún
2021-01-12 21:58           ` Vladimir Oltean
2021-01-13  3:56             ` Marek Behún
2021-01-11  1:21 ` [PATCH net-next v14 6/6] net: dsa: mv88e6xxx: implement .port_set_policy for Amethyst Marek Behún
2021-01-11  6:00   ` Pavana Sharma

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