From: Russell King - ARM Linux <linux@armlinux.org.uk>
To: Antoine Tenart <antoine.tenart@free-electrons.com>
Cc: davem@davemloft.net, kishon@ti.com, andrew@lunn.ch,
jason@lakedaemon.net, sebastian.hesselbarth@gmail.com,
gregory.clement@free-electrons.com,
thomas.petazzoni@free-electrons.com, nadavh@marvell.com,
linux-kernel@vger.kernel.org, mw@semihalf.com,
stefanc@marvell.com, miquel.raynal@free-electrons.com,
netdev@vger.kernel.org
Subject: Re: [PATCH net-next v2 05/14] net: mvpp2: do not force the link mode
Date: Fri, 25 Aug 2017 23:43:13 +0100 [thread overview]
Message-ID: <20170825224312.GD20805@n2100.armlinux.org.uk> (raw)
In-Reply-To: <20170825144821.31129-6-antoine.tenart@free-electrons.com>
On Fri, Aug 25, 2017 at 04:48:12PM +0200, Antoine Tenart wrote:
> The link mode (speed, duplex) was forced based on what the phylib
> returns. This should not be the case, and only forced by ethtool
> functions manually. This patch removes the link mode enforcement from
> the phylib link_event callback.
So how does RGMII work (which has no in-band signalling between the PHY
and MAC)?
phylib expects the network driver to configure it according to the PHY
state at link_event time - I think you need to explain more why you
think that this is not necessary.
>
> Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
> ---
> drivers/net/ethernet/marvell/mvpp2.c | 24 ------------------------
> 1 file changed, 24 deletions(-)
>
> diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
> index fab231858a41..498a4969dc58 100644
> --- a/drivers/net/ethernet/marvell/mvpp2.c
> +++ b/drivers/net/ethernet/marvell/mvpp2.c
> @@ -5741,30 +5741,10 @@ static void mvpp2_link_event(struct net_device *dev)
> struct mvpp2_port *port = netdev_priv(dev);
> struct phy_device *phydev = dev->phydev;
> int status_change = 0;
> - u32 val;
>
> if (phydev->link) {
> if ((port->speed != phydev->speed) ||
> (port->duplex != phydev->duplex)) {
> - u32 val;
> -
> - val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG);
> - val &= ~(MVPP2_GMAC_CONFIG_MII_SPEED |
> - MVPP2_GMAC_CONFIG_GMII_SPEED |
> - MVPP2_GMAC_CONFIG_FULL_DUPLEX |
> - MVPP2_GMAC_AN_SPEED_EN |
> - MVPP2_GMAC_AN_DUPLEX_EN);
> -
> - if (phydev->duplex)
> - val |= MVPP2_GMAC_CONFIG_FULL_DUPLEX;
> -
> - if (phydev->speed == SPEED_1000)
> - val |= MVPP2_GMAC_CONFIG_GMII_SPEED;
> - else if (phydev->speed == SPEED_100)
> - val |= MVPP2_GMAC_CONFIG_MII_SPEED;
> -
> - writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG);
> -
> port->duplex = phydev->duplex;
> port->speed = phydev->speed;
> }
> @@ -5782,10 +5762,6 @@ static void mvpp2_link_event(struct net_device *dev)
>
> if (status_change) {
> if (phydev->link) {
> - val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG);
> - val |= (MVPP2_GMAC_FORCE_LINK_PASS |
> - MVPP2_GMAC_FORCE_LINK_DOWN);
> - writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG);
> mvpp2_egress_enable(port);
> mvpp2_ingress_enable(port);
> } else {
> --
> 2.13.5
>
--
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up
According to speedtest.net: 8.21Mbps down 510kbps up
next prev parent reply other threads:[~2017-08-25 22:43 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-25 14:48 [PATCH net-next v2 00/14] net: mvpp2: comphy configuration Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 01/14] phy: add sgmii and 10gkr modes to the phy_mode enum Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 02/14] phy: add the mvebu cp110 comphy driver Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 03/14] Documentation/bindings: phy: document the Marvell " Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 04/14] net: mvpp2: initialize the comphy Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 05/14] net: mvpp2: do not force the link mode Antoine Tenart
2017-08-25 22:43 ` Russell King - ARM Linux [this message]
2017-08-28 6:55 ` Antoine Tenart
2017-08-28 8:38 ` Marcin Wojtas
2017-08-28 8:51 ` Russell King - ARM Linux
2017-08-28 9:40 ` Antoine Tenart
2017-08-28 11:06 ` Russell King - ARM Linux
2017-08-28 11:32 ` Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 06/14] net: mvpp2: simplify the link_event function Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 07/14] net: mvpp2: improve the link management function Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 08/14] net: mvpp2: check the netif is running in the link_event function Antoine Tenart
2017-08-25 16:49 ` Florian Fainelli
2017-08-25 17:09 ` Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 09/14] net: mvpp2: dynamic reconfiguration of the PHY mode Antoine Tenart
2017-08-25 22:46 ` Russell King - ARM Linux
2017-08-28 6:52 ` Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 10/14] arm64: dts: marvell: extend the cp110 syscon register area length Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 11/14] arm64: dts: marvell: add comphy nodes on cp110 master and slave Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 12/14] arm64: dts: marvell: mcbin: add comphy references to Ethernet ports Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 13/14] arm64: dts: marvell: 7040-db: " Antoine Tenart
2017-08-25 14:48 ` [PATCH net-next v2 14/14] arm64: defconfig: enable Marvell CP110 comphy Antoine Tenart
2017-08-25 15:51 ` [PATCH net-next v2 00/14] net: mvpp2: comphy configuration Andrew Lunn
2017-08-25 15:56 ` Antoine Tenart
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