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| author | Andrew Lunn <andrew@lunn.ch> | 2015-08-31 15:56:49 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-31 14:48:02 -0700 |
| commit | 39b0c705195e9409dc8a40cc82b11d81405a4a4b (patch) | |
| tree | 8c25a7a4b8bd5067aa5a270ff3049d88a12febb0 /net/dsa | |
| parent | 34b31da486a5e4eda9ff548ebf6dc3adc167bd0c (diff) | |
| download | lwn-39b0c705195e9409dc8a40cc82b11d81405a4a4b.tar.gz lwn-39b0c705195e9409dc8a40cc82b11d81405a4a4b.zip | |
net: dsa: Allow configuration of CPU & DSA port speeds/duplex
By default, DSA and CPU ports are configured to the maximum speed the
switch supports. However there can be use cases where the peer devices
port is slower. Allow a fixed-link property to be used with the DSA
and CPU port in the device tree, and use this information to configure
the port.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
| -rw-r--r-- | net/dsa/dsa.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index 053eb2b8e682..afff17341b73 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -176,6 +176,35 @@ __ATTRIBUTE_GROUPS(dsa_hwmon); #endif /* CONFIG_NET_DSA_HWMON */ /* basic switch operations **************************************************/ +static int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct net_device *master) +{ + struct dsa_chip_data *cd = ds->pd; + struct device_node *port_dn; + struct phy_device *phydev; + int ret, port; + + for (port = 0; port < DSA_MAX_PORTS; port++) { + if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))) + continue; + + port_dn = cd->port_dn[port]; + if (of_phy_is_fixed_link(port_dn)) { + ret = of_phy_register_fixed_link(port_dn); + if (ret) { + netdev_err(master, + "failed to register fixed PHY\n"); + return ret; + } + phydev = of_phy_find_device(port_dn); + genphy_config_init(phydev); + genphy_read_status(phydev); + if (ds->drv->adjust_link) + ds->drv->adjust_link(ds, port, phydev); + } + } + return 0; +} + static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent) { struct dsa_switch_driver *drv = ds->drv; @@ -297,6 +326,14 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent) } } + /* Perform configuration of the CPU and DSA ports */ + ret = dsa_cpu_dsa_setup(ds, dst->master_netdev); + if (ret < 0) { + netdev_err(dst->master_netdev, "[%d] : can't configure CPU and DSA ports\n", + index); + ret = 0; + } + #ifdef CONFIG_NET_DSA_HWMON /* If the switch provides a temperature sensor, * register with hardware monitoring subsystem. |