[PATCH net-next v3 08/13] net: mvpp2: dynamic reconfiguration of the comphy/GoP/MAC
From: Antoine Tenart <hidden>
Date: 2017-08-28 14:57:49
Also in:
lkml
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
This patch adds logic to reconfigure the comphy/GoP/MAC when the link state is updated at runtime. This is very useful on boards where many link speed are supported: depending on what is negotiated the PPv2 driver will automatically reconfigures the link between the PHY and the MAC. Signed-off-by: Antoine Tenart <redacted> --- drivers/net/ethernet/marvell/mvpp2.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
index 2f05a0b0773c..9e64b1ba3d43 100644
--- a/drivers/net/ethernet/marvell/mvpp2.c
+++ b/drivers/net/ethernet/marvell/mvpp2.c@@ -5771,9 +5771,28 @@ static void mvpp2_link_event(struct net_device *dev) { struct mvpp2_port *port = netdev_priv(dev); struct phy_device *phydev = dev->phydev; + bool link_reconfigured = false; u32 val; if (phydev->link) { + if (port->phy_interface != phydev->interface && port->comphy) { + /* disable current port for reconfiguration */ + mvpp2_interrupts_disable(port); + netif_carrier_off(port->dev); + mvpp2_port_disable(port); + phy_power_off(port->comphy); + + /* comphy reconfiguration */ + port->phy_interface = phydev->interface; + mvpp22_comphy_init(port); + + /* gop/mac reconfiguration */ + mvpp22_gop_init(port); + mvpp2_port_mii_set(port); + + link_reconfigured = true; + } + if ((port->speed != phydev->speed) || (port->duplex != phydev->duplex)) { mvpp2_gmac_set_autoneg(port, phydev);
@@ -5783,7 +5802,7 @@ static void mvpp2_link_event(struct net_device *dev) } } - if (phydev->link != port->link) { + if (phydev->link != port->link || link_reconfigured) { port->link = phydev->link; if (phydev->link) {
--
2.13.5