From 4f54cf4c901dd0b759af7b2ee1fe344d970df50b Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 8 Jul 2020 12:31:01 +0100 Subject: net: dsa/mv88e6xxx: add support for rate-matching PHYs Add basic support for rate-matching 10G PHYs for mv88e6xxx - if we are in RXAUI, XAUI or 10GBASE-R mode, the link speed is 10G, even if the media is running at a slower speed. Signed-off-by: Russell King --- drivers/net/dsa/mv88e6xxx/chip.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index 34dc63bbeb6c..bd60e509d809 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -760,6 +760,18 @@ static void mv88e6xxx_mac_link_up(struct dsa_switch *ds, int port, if (err) goto error; + /* The link parameters passed in are the media side parameters. + * If in RXAUI, XAUI or 10GBASE-R with a rate matching PHY, we + * need to operate our link at 10G. Only full duplex is + * supported at this speed. + */ + if (interface == PHY_INTERFACE_MODE_RXAUI || + interface == PHY_INTERFACE_MODE_XAUI || + interface == PHY_INTERFACE_MODE_10GBASER) { + speed = SPEED_10000; + duplex = DUPLEX_FULL; + } + if (ops->port_set_speed_duplex) { err = ops->port_set_speed_duplex(chip, port, speed, duplex); -- cgit