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net: phy: Increase link up delay in genphy_update_link()

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I've noticed that in most cases when genphy_update_link() is called, the
ethernet driver (mt7628-eth in this case) fails with the first ethernet
packets. Resulting in a timeout of the first tftp command. Increasing
the delay in the link check look from 1 to 50 ms and moving it below the
BMSR register read fixes this issue, resulting in a stable ethernet
traffic, even after initial link autonogotiation.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Weijie Gao <weijie.gao@mediatek.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Stefan Roese 2019-09-30 10:26:42 +02:00 • committed by Joe Hershberger
parent 7d9701db40
commit 27c3f70f3b
1 changed files with 2 additions and 2 deletions
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4
drivers/net/phy/phy.c
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@ -256,11 +256,11 @@ int genphy_update_link(struct phy_device *phydev)
return -EINTR; return -EINTR;
} }
if ((i++ % 500) == 0) if ((i++ % 10) == 0)
printf("."); printf(".");
udelay(1000); /* 1 ms */
mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
mdelay(50); /* 50 ms */
} }
printf(" done\n"); printf(" done\n");
phydev->link = 1; phydev->link = 1;