From: <stefanc@marvell.com>
To: <netdev@vger.kernel.org>
Cc: <thomas.petazzoni@bootlin.com>, <davem@davemloft.net>,
<nadavh@marvell.com>, <ymarkman@marvell.com>,
<linux-kernel@vger.kernel.org>, <stefanc@marvell.com>,
<kuba@kernel.org>, <linux@armlinux.org.uk>, <mw@semihalf.com>,
<andrew@lunn.ch>, <rmk+kernel@armlinux.org.uk>
Subject: [PATCH net v3] net: mvpp2: disable force link UP during port init procedure
Date: Thu, 17 Dec 2020 16:52:15 +0200 [thread overview]
Message-ID: <1608216735-14501-1-git-send-email-stefanc@marvell.com> (raw)
From: Stefan Chulski <stefanc@marvell.com>
Force link UP can be enabled by bootloader during tftpboot
and breaks NFS support.
Force link UP disabled during port init procedure.
Fixes: f84bf386f395 ("net: mvpp2: initialize the GoP")
Signed-off-by: Stefan Chulski <stefanc@marvell.com>
---
Changes in v3:
- Added Fixes tag.
Changes in v2:
- No changes.
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index d2b0506..0ad3177 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -5479,7 +5479,7 @@ static int mvpp2_port_init(struct mvpp2_port *port)
struct mvpp2 *priv = port->priv;
struct mvpp2_txq_pcpu *txq_pcpu;
unsigned int thread;
- int queue, err;
+ int queue, err, val;
/* Checks for hardware constraints */
if (port->first_rxq + port->nrxqs >
@@ -5493,6 +5493,18 @@ static int mvpp2_port_init(struct mvpp2_port *port)
mvpp2_egress_disable(port);
mvpp2_port_disable(port);
+ if (mvpp2_is_xlg(port->phy_interface)) {
+ val = readl(port->base + MVPP22_XLG_CTRL0_REG);
+ val &= ~MVPP22_XLG_CTRL0_FORCE_LINK_PASS;
+ val |= MVPP22_XLG_CTRL0_FORCE_LINK_DOWN;
+ writel(val, port->base + MVPP22_XLG_CTRL0_REG);
+ } else {
+ val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG);
+ val &= ~MVPP2_GMAC_FORCE_LINK_PASS;
+ val |= MVPP2_GMAC_FORCE_LINK_DOWN;
+ writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG);
+ }
+
port->tx_time_coal = MVPP2_TXDONE_COAL_USEC;
port->txqs = devm_kcalloc(dev, port->ntxqs, sizeof(*port->txqs),
--
1.9.1
next reply other threads:[~2020-12-17 14:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-17 14:52 stefanc [this message]
2020-12-18 3:36 ` [PATCH net v3] net: mvpp2: disable force link UP during port init procedure Marcin Wojtas
2020-12-19 18:02 ` Jakub Kicinski
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