netdev - [PATCH 1/2] net: dsa: allow XAUI phy interface mode

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Date:   Tue, 12 Dec 2017 09:29:46 +0000
From:   Russell King <rmk+kernel@...linux.org.uk>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Mark Rutland <mark.rutland@....com>, netdev@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Stefan Agner <stefan@...er.ch>,
        Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Subject: [PATCH 1/2] net: dsa: allow XAUI phy interface mode

XGMII is a 32-bit bus plus two clock signals per direction.  XAUI is
four serial lanes per direction.  The 88e6190 supports XAUI but not
XGMII as it doesn't have enough pins.  The same is true of 88e6176.

Match on PHY_INTERFACE_MODE_XAUI for the XAUI port type, but keep
accepting XGMII for backwards compatibility.

Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
---
 drivers/net/dsa/mv88e6xxx/port.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index a7801f6668a5..6315774d72b3 100644
--- a/drivers/net/dsa/mv88e6xxx/port.c
+++ b/drivers/net/dsa/mv88e6xxx/port.c
@@ -338,6 +338,7 @@ int mv88e6390x_port_set_cmode(struct mv88e6xxx_chip *chip, int port,
 		cmode = MV88E6XXX_PORT_STS_CMODE_2500BASEX;
 		break;
 	case PHY_INTERFACE_MODE_XGMII:
+	case PHY_INTERFACE_MODE_XAUI:
 		cmode = MV88E6XXX_PORT_STS_CMODE_XAUI;
 		break;
 	case PHY_INTERFACE_MODE_RXAUI:
-- 
2.7.4