net: dsa: mv88e6xxx: support RMII cmode

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@siklu.com>
Link: https://lore.kernel.org/r/a962d1ccbeec42daa10dd8aff0e66e31f0faf1eb.1646050203.git.baruch@tkos.co.il
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index a58997f..795b312 100644 (file)
--- 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;