[PATCH] net: dsa: mv88e6xxx: support RGMII cmode

[Marcus Carlberg]

Since the probe defaults all interfaces to the highest speed possible
(10GBASE-X in mv88e6393x) before the phy mode configuration from the
devicetree is considered it is currently impossible to use port 0 in
RGMII mode.

This change will allow RGMII modes to be configurable for port 0
enabling port 0 to be configured as RGMII as well as serial depending
on configuration.

Signed-off-by: Marcus Carlberg <marcus.carlberg@xxxxxxxx>
---
 drivers/net/dsa/mv88e6xxx/port.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index 90c55f23b7c9..2e005449e733 100644
--- a/drivers/net/dsa/mv88e6xxx/port.c
+++ b/drivers/net/dsa/mv88e6xxx/port.c
@@ -517,6 +517,12 @@ static int mv88e6xxx_port_set_cmode(struct mv88e6xxx_chip *chip, int port,
 	case PHY_INTERFACE_MODE_RMII:
 		cmode = MV88E6XXX_PORT_STS_CMODE_RMII;
 		break;
+	case PHY_INTERFACE_MODE_RGMII:
+	case PHY_INTERFACE_MODE_RGMII_ID:
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+		cmode = MV88E6XXX_PORT_STS_CMODE_RGMII;
+		break;
 	case PHY_INTERFACE_MODE_1000BASEX:
 		cmode = MV88E6XXX_PORT_STS_CMODE_1000BASEX;
 		break;
-- 
2.20.1