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Commit 89273bc0 authored by Antoine Tenart's avatar Antoine Tenart Committed by David S. Miller
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net: mvpp2: dynamic reconfiguration of the comphy/GoP/MAC 



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: default avatarAntoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 65a2c09a

drivers/net/ethernet/marvell/mvpp2.c

+20 −1
Original line number Diff line number Diff line
@@ -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) {