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net: phy: dp83867: Set FORCE_LINK_GOOD to default after reset 

According to the Datasheet this bit should be 0 (Normal operation) in
default. With the FORCE_LINK_GOOD bit set, it is not possible to get a
link. This patch sets FORCE_LINK_GOOD to the default value after
resetting the phy.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Grzeschik 2020-01-16 14:16:31 +01:00 committed by David S. Miller
parent 49edd6a2c4
commit 86ffe920e6
1 changed files with 7 additions and 1 deletions
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8
drivers/net/phy/dp83867.c
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@ -97,6 +97,7 @@
#define DP83867_PHYCR_FIFO_DEPTH_MAX 0x03 #define DP83867_PHYCR_FIFO_DEPTH_MAX 0x03
#define DP83867_PHYCR_FIFO_DEPTH_MASK GENMASK(15, 14) #define DP83867_PHYCR_FIFO_DEPTH_MASK GENMASK(15, 14)
#define DP83867_PHYCR_RESERVED_MASK BIT(11) #define DP83867_PHYCR_RESERVED_MASK BIT(11)
#define DP83867_PHYCR_FORCE_LINK_GOOD BIT(10)
/* RGMIIDCTL bits */ /* RGMIIDCTL bits */
#define DP83867_RGMII_TX_CLK_DELAY_MAX 0xf #define DP83867_RGMII_TX_CLK_DELAY_MAX 0xf
@ -599,7 +600,12 @@ static int dp83867_phy_reset(struct phy_device *phydev)
usleep_range(10, 20); usleep_range(10, 20);
return 0; /* After reset FORCE_LINK_GOOD bit is set. Although the
* default value should be unset. Disable FORCE_LINK_GOOD
* for the phy to work properly.
*/
return phy_modify(phydev, MII_DP83867_PHYCTRL,
DP83867_PHYCR_FORCE_LINK_GOOD, 0);
} }
static struct phy_driver dp83867_driver[] = { static struct phy_driver dp83867_driver[] = {