diff options
| -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); |