From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Lunn Subject: [PATCH net-next 4/9] net: dsa: Allow configuration of CPU & DSA port speeds/duplex Date: Sun, 23 Aug 2015 11:46:55 +0200 Message-ID: <1440323220-20438-5-git-send-email-andrew@lunn.ch> References: <1440323220-20438-1-git-send-email-andrew@lunn.ch> Cc: Florian Fainelli , netdev , Andrew Lunn To: David Miller Return-path: Received: from vps0.lunn.ch ([178.209.37.122]:38074 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751971AbbHWJyx (ORCPT ); Sun, 23 Aug 2015 05:54:53 -0400 In-Reply-To: <1440323220-20438-1-git-send-email-andrew@lunn.ch> Sender: netdev-owner@vger.kernel.org List-ID: 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 --- net/dsa/dsa.c | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) 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. -- 2.5.0