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| author | Max Uvarov <muvarov@gmail.com> | 2019-05-28 13:00:49 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-05-29 14:28:48 -0700 |
| commit | 333061b924539c0de081339643f45514f5f1c1e6 (patch) | |
| tree | 0c07ad78ec25d030ac6901f32566d3b947bfdb0c /drivers/net | |
| parent | 3d3ced2ec5d71b99d72ae6910fbdf890bc2eccf0 (diff) | |
| download | lwn-333061b924539c0de081339643f45514f5f1c1e6.tar.gz lwn-333061b924539c0de081339643f45514f5f1c1e6.zip | |
net: phy: dp83867: fix speed 10 in sgmii mode
For supporting 10Mps speed in SGMII mode DP83867_10M_SGMII_RATE_ADAPT bit
of DP83867_10M_SGMII_CFG register has to be cleared by software.
That does not affect speeds 100 and 1000 so can be done on init.
Signed-off-by: Max Uvarov <muvarov@gmail.com>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/phy/dp83867.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/phy/dp83867.c b/drivers/net/phy/dp83867.c index fd35131a0c39..1091a625bf4c 100644 --- a/drivers/net/phy/dp83867.c +++ b/drivers/net/phy/dp83867.c @@ -30,6 +30,8 @@ #define DP83867_STRAP_STS1 0x006E #define DP83867_RGMIIDCTL 0x0086 #define DP83867_IO_MUX_CFG 0x0170 +#define DP83867_10M_SGMII_CFG 0x016F +#define DP83867_10M_SGMII_RATE_ADAPT_MASK BIT(7) #define DP83867_SW_RESET BIT(15) #define DP83867_SW_RESTART BIT(14) @@ -277,6 +279,21 @@ static int dp83867_config_init(struct phy_device *phydev) DP83867_IO_MUX_CFG_IO_IMPEDANCE_CTRL); } + if (phydev->interface == PHY_INTERFACE_MODE_SGMII) { + /* For support SPEED_10 in SGMII mode + * DP83867_10M_SGMII_RATE_ADAPT bit + * has to be cleared by software. That + * does not affect SPEED_100 and + * SPEED_1000. + */ + ret = phy_modify_mmd(phydev, DP83867_DEVADDR, + DP83867_10M_SGMII_CFG, + DP83867_10M_SGMII_RATE_ADAPT_MASK, + 0); + if (ret) + return ret; + } + /* Enable Interrupt output INT_OE in CFG3 register */ if (phy_interrupt_is_valid(phydev)) { val = phy_read(phydev, DP83867_CFG3); |