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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>
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1 changed files with 37 additions and 0 deletions
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@ -176,6 +176,35 @@ __ATTRIBUTE_GROUPS(dsa_hwmon);
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#endif /* CONFIG_NET_DSA_HWMON */
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/* basic switch operations **************************************************/
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static int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct net_device *master)
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{
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struct dsa_chip_data *cd = ds->pd;
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struct device_node *port_dn;
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struct phy_device *phydev;
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int ret, port;
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for (port = 0; port < DSA_MAX_PORTS; port++) {
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if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
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continue;
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port_dn = cd->port_dn[port];
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if (of_phy_is_fixed_link(port_dn)) {
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ret = of_phy_register_fixed_link(port_dn);
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if (ret) {
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netdev_err(master,
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"failed to register fixed PHY\n");
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return ret;
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}
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phydev = of_phy_find_device(port_dn);
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genphy_config_init(phydev);
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genphy_read_status(phydev);
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if (ds->drv->adjust_link)
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ds->drv->adjust_link(ds, port, phydev);
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}
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}
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return 0;
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}
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static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
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{
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struct dsa_switch_driver *drv = ds->drv;
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@ -297,6 +326,14 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
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}
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}
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/* Perform configuration of the CPU and DSA ports */
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ret = dsa_cpu_dsa_setup(ds, dst->master_netdev);
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if (ret < 0) {
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netdev_err(dst->master_netdev, "[%d] : can't configure CPU and DSA ports\n",
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index);
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ret = 0;
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}
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#ifdef CONFIG_NET_DSA_HWMON
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/* If the switch provides a temperature sensor,
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* register with hardware monitoring subsystem.
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