diff options
Diffstat (limited to 'drivers/net/phy/nxp-tja11xx.c')
| -rw-r--r-- | drivers/net/phy/nxp-tja11xx.c | 83 |
1 files changed, 78 insertions, 5 deletions
diff --git a/drivers/net/phy/nxp-tja11xx.c b/drivers/net/phy/nxp-tja11xx.c index 2a8195c50d14..ec91e671f8aa 100644 --- a/drivers/net/phy/nxp-tja11xx.c +++ b/drivers/net/phy/nxp-tja11xx.c @@ -10,6 +10,7 @@ #include <linux/mdio.h> #include <linux/mii.h> #include <linux/module.h> +#include <linux/of.h> #include <linux/phy.h> #include <linux/hwmon.h> #include <linux/bitfield.h> @@ -34,6 +35,11 @@ #define MII_CFG1 18 #define MII_CFG1_MASTER_SLAVE BIT(15) #define MII_CFG1_AUTO_OP BIT(14) +#define MII_CFG1_INTERFACE_MODE_MASK GENMASK(9, 8) +#define MII_CFG1_MII_MODE (0x0 << 8) +#define MII_CFG1_RMII_MODE_REFCLK_IN BIT(8) +#define MII_CFG1_RMII_MODE_REFCLK_OUT BIT(9) +#define MII_CFG1_REVMII_MODE GENMASK(9, 8) #define MII_CFG1_SLEEP_CONFIRM BIT(6) #define MII_CFG1_LED_MODE_MASK GENMASK(5, 4) #define MII_CFG1_LED_MODE_LINKUP 0 @@ -72,11 +78,15 @@ #define MII_COMMCFG 27 #define MII_COMMCFG_AUTO_OP BIT(15) +/* Configure REF_CLK as input in RMII mode */ +#define TJA110X_RMII_MODE_REFCLK_IN BIT(0) + struct tja11xx_priv { char *hwmon_name; struct device *hwmon_dev; struct phy_device *phydev; struct work_struct phy_register_work; + u32 flags; }; struct tja11xx_phy_stats { @@ -251,8 +261,34 @@ do_test: return __genphy_config_aneg(phydev, changed); } +static int tja11xx_get_interface_mode(struct phy_device *phydev) +{ + struct tja11xx_priv *priv = phydev->priv; + int mii_mode; + + switch (phydev->interface) { + case PHY_INTERFACE_MODE_MII: + mii_mode = MII_CFG1_MII_MODE; + break; + case PHY_INTERFACE_MODE_REVMII: + mii_mode = MII_CFG1_REVMII_MODE; + break; + case PHY_INTERFACE_MODE_RMII: + if (priv->flags & TJA110X_RMII_MODE_REFCLK_IN) + mii_mode = MII_CFG1_RMII_MODE_REFCLK_IN; + else + mii_mode = MII_CFG1_RMII_MODE_REFCLK_OUT; + break; + default: + return -EINVAL; + } + + return mii_mode; +} + static int tja11xx_config_init(struct phy_device *phydev) { + u16 reg_mask, reg_val; int ret; ret = tja11xx_enable_reg_write(phydev); @@ -265,15 +301,32 @@ static int tja11xx_config_init(struct phy_device *phydev) switch (phydev->phy_id & PHY_ID_MASK) { case PHY_ID_TJA1100: - ret = phy_modify(phydev, MII_CFG1, - MII_CFG1_AUTO_OP | MII_CFG1_LED_MODE_MASK | - MII_CFG1_LED_ENABLE, - MII_CFG1_AUTO_OP | MII_CFG1_LED_MODE_LINKUP | - MII_CFG1_LED_ENABLE); + reg_mask = MII_CFG1_AUTO_OP | MII_CFG1_LED_MODE_MASK | + MII_CFG1_LED_ENABLE; + reg_val = MII_CFG1_AUTO_OP | MII_CFG1_LED_MODE_LINKUP | + MII_CFG1_LED_ENABLE; + + reg_mask |= MII_CFG1_INTERFACE_MODE_MASK; + ret = tja11xx_get_interface_mode(phydev); + if (ret < 0) + return ret; + + reg_val |= (ret & 0xffff); + ret = phy_modify(phydev, MII_CFG1, reg_mask, reg_val); if (ret) return ret; break; case PHY_ID_TJA1101: + reg_mask = MII_CFG1_INTERFACE_MODE_MASK; + ret = tja11xx_get_interface_mode(phydev); + if (ret < 0) + return ret; + + reg_val = ret & 0xffff; + ret = phy_modify(phydev, MII_CFG1, reg_mask, reg_val); + if (ret) + return ret; + fallthrough; case PHY_ID_TJA1102: ret = phy_set_bits(phydev, MII_COMMCFG, MII_COMMCFG_AUTO_OP); if (ret) @@ -458,16 +511,36 @@ static int tja11xx_hwmon_register(struct phy_device *phydev, return PTR_ERR_OR_ZERO(priv->hwmon_dev); } +static int tja11xx_parse_dt(struct phy_device *phydev) +{ + struct device_node *node = phydev->mdio.dev.of_node; + struct tja11xx_priv *priv = phydev->priv; + + if (!IS_ENABLED(CONFIG_OF_MDIO)) + return 0; + + if (of_property_read_bool(node, "nxp,rmii-refclk-in")) + priv->flags |= TJA110X_RMII_MODE_REFCLK_IN; + + return 0; +} + static int tja11xx_probe(struct phy_device *phydev) { struct device *dev = &phydev->mdio.dev; struct tja11xx_priv *priv; + int ret; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->phydev = phydev; + phydev->priv = priv; + + ret = tja11xx_parse_dt(phydev); + if (ret) + return ret; return tja11xx_hwmon_register(phydev, priv); } |