netdev - [PATCH net-next 2/2] net: dsa: mv88e6xxx: support RMII cmode

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Message-Id: <a962d1ccbeec42daa10dd8aff0e66e31f0faf1eb.1646050203.git.baruch@tkos.co.il>
Date:   Mon, 28 Feb 2022 14:10:03 +0200
From:   Baruch Siach <baruch@...s.co.il>
To:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>
Cc:     Baruch Siach <baruch.siach@...lu.com>, netdev@...r.kernel.org,
        Russell King <linux@...linux.org.uk>
Subject: [PATCH net-next 2/2] net: dsa: mv88e6xxx: support RMII cmode

From: Baruch Siach <baruch.siach@...lu.com>

Add support for direct RMII MAC mode. This allows hardware with CPU port
connected in direct 100M fixed link to work properly.

Signed-off-by: Baruch Siach <baruch.siach@...lu.com>
---
 drivers/net/dsa/mv88e6xxx/port.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index a58997f1fd69..795b3128768f 100644
--- a/drivers/net/dsa/mv88e6xxx/port.c
+++ b/drivers/net/dsa/mv88e6xxx/port.c
@@ -550,6 +550,9 @@ static int mv88e6xxx_port_set_cmode(struct mv88e6xxx_chip *chip, int port,
 		mode = PHY_INTERFACE_MODE_1000BASEX;
 
 	switch (mode) {
+	case PHY_INTERFACE_MODE_RMII:
+		cmode = MV88E6XXX_PORT_STS_CMODE_RMII;
+		break;
 	case PHY_INTERFACE_MODE_1000BASEX:
 		cmode = MV88E6XXX_PORT_STS_CMODE_1000BASEX;
 		break;
-- 
2.34.1