linux-kernel - [PATCH v2 net 0/2] net: dsa: mv88e6xxx: fix marvell 6320/21 switch probing

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Date: Wed,  8 May 2024 09:29:42 +0200
From: Steffen Bätz <steffen@...osonix.de>
To: 
Cc: Steffen Bätz <steffen@...osonix.de>,
	Andrew Lunn <andrew@...n.ch>,
	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>,
	Russell King <linux@...linux.org.uk>,
	"Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 net 0/2] net: dsa: mv88e6xxx: fix marvell 6320/21 switch probing

As of commit de5c9bf40c45 ("net: phylink: require supported_interfaces to
be filled")
Marvell 88e6320/21 switches fail to be probed:

..
mv88e6085 30be0000.ethernet-1:00: phylink: error: empty supported_interfaces
error creating PHYLINK: -22
..

The problem stems from the use of mv88e6185_phylink_get_caps() to get
the device capabilities. 
Since there are serdes only ports 0/1 included, create a new dedicated 
phylink_get_caps for the 6320 and 6321 to properly support their 
set of capabilities.

Fixes: de5c9bf40c45 ("net: phylink: require supported_interfaces to be filled")

Steffen Bätz (2):
  net: dsa: mv88e6xxx: add phylink_get_caps for the mv88e6320/21 family
  net: dsa: mv88e6xxx: read cmode on mv88e6320/21 serdes only ports

 drivers/net/dsa/mv88e6xxx/chip.c | 39 +++++++++++++++++++++++++-------
 1 file changed, 31 insertions(+), 8 deletions(-)

Changes since v1:
- Removed unused variables.
- Collected Reviewed-by tags from Andrew and Fabio
-- 
2.34.1


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