diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/phy/dp83822.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/net/phy/dp83822.c b/drivers/net/phy/dp83822.c index 30f2616ab1c2..edc39ae4c241 100644 --- a/drivers/net/phy/dp83822.c +++ b/drivers/net/phy/dp83822.c @@ -100,6 +100,8 @@ #define DP83822_WOL_CLR_INDICATION BIT(11) /* RCSR bits */ +#define DP83822_RMII_MODE_EN BIT(5) +#define DP83822_RMII_MODE_SEL BIT(7) #define DP83822_RGMII_MODE_EN BIT(9) #define DP83822_RX_CLK_SHIFT BIT(12) #define DP83822_TX_CLK_SHIFT BIT(11) @@ -494,12 +496,54 @@ static int dp83822_config_init(struct phy_device *phydev) return dp8382x_disable_wol(phydev); } +static int dp83826_config_rmii_mode(struct phy_device *phydev) +{ + struct device *dev = &phydev->mdio.dev; + const char *of_val; + int ret; + + if (!device_property_read_string(dev, "ti,rmii-mode", &of_val)) { + if (strcmp(of_val, "master") == 0) { + ret = phy_clear_bits_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RCSR, + DP83822_RMII_MODE_SEL); + } else if (strcmp(of_val, "slave") == 0) { + ret = phy_set_bits_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RCSR, + DP83822_RMII_MODE_SEL); + } else { + phydev_err(phydev, "Invalid value for ti,rmii-mode property (%s)\n", + of_val); + ret = -EINVAL; + } + + if (ret) + return ret; + } + + return 0; +} + static int dp83826_config_init(struct phy_device *phydev) { struct dp83822_private *dp83822 = phydev->priv; u16 val, mask; int ret; + if (phydev->interface == PHY_INTERFACE_MODE_RMII) { + ret = phy_set_bits_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RCSR, + DP83822_RMII_MODE_EN); + if (ret) + return ret; + + ret = dp83826_config_rmii_mode(phydev); + if (ret) + return ret; + } else { + ret = phy_clear_bits_mmd(phydev, DP83822_DEVADDR, MII_DP83822_RCSR, + DP83822_RMII_MODE_EN); + if (ret) + return ret; + } + if (dp83822->cfg_dac_minus != DP83826_CFG_DAC_MINUS_DEFAULT) { val = FIELD_PREP(DP83826_VOD_CFG1_MINUS_MDI_MASK, dp83822->cfg_dac_minus) | FIELD_PREP(DP83826_VOD_CFG1_MINUS_MDIX_MASK, |