From: Andrew Lunn Date: Thu, 10 Nov 2016 14:44:00 +0000 (+0100) Subject: net: dsa: mv88e6xxx: Don't modify RGMII delays when not RGMII mode X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fedf18651b07f1701f9e8684b49f3b6c879577fc;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git net: dsa: mv88e6xxx: Don't modify RGMII delays when not RGMII mode The RGMII modes delays can be set via strapping pings or EEPROM. Don't change them unless explicitly asked to change them. The recent refactoring of setting the MAC configuration changed this behaviours, in that CPU and DSA ports have any pre-configured RGMII delays removed. This breaks the Armada 370RD board. Restore the previous behaviour, in that RGMII delays are only applied/removed when explicitly asked for via an phy-mode being PHY_INTERFACE_MODE_RGMII* Fixes: 7340e5ecdbb1 ("net: dsa: mv88e6xxx: setup port's MAC") Signed-off-by: Andrew Lunn Signed-off-by: David S. Miller --- diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c index 18eeed083cbd..e4978f6367aa 100644 --- a/drivers/net/dsa/mv88e6xxx/port.c +++ b/drivers/net/dsa/mv88e6xxx/port.c @@ -63,9 +63,10 @@ static int mv88e6xxx_port_set_rgmii_delay(struct mv88e6xxx_chip *chip, int port, reg |= PORT_PCS_CTRL_RGMII_DELAY_RXCLK | PORT_PCS_CTRL_RGMII_DELAY_TXCLK; break; - default: - /* no delay */ + case PHY_INTERFACE_MODE_RGMII: break; + default: + return 0; } err = mv88e6xxx_port_write(chip, port, PORT_PCS_CTRL, reg);