diff options
| -rw-r--r-- | Documentation/devicetree/bindings/net/qca,ar803x.yaml | 16 | ||||
| -rw-r--r-- | drivers/net/phy/at803x.c | 65 |
2 files changed, 80 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/net/qca,ar803x.yaml b/Documentation/devicetree/bindings/net/qca,ar803x.yaml index 64b3357ade8a..b3d4013b7ca6 100644 --- a/Documentation/devicetree/bindings/net/qca,ar803x.yaml +++ b/Documentation/devicetree/bindings/net/qca,ar803x.yaml @@ -28,6 +28,10 @@ properties: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2] + qca,disable-smarteee: + description: Disable Atheros SmartEEE feature. + type: boolean + qca,keep-pll-enabled: description: | If set, keep the PLL enabled even if there is no link. Useful if you @@ -36,6 +40,18 @@ properties: Only supported on the AR8031. type: boolean + qca,smarteee-tw-us-100m: + description: EEE Tw parameter for 100M links. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 1 + maximum: 255 + + qca,smarteee-tw-us-1g: + description: EEE Tw parameter for gigabit links. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 1 + maximum: 255 + vddio-supply: description: | RGMII I/O voltage regulator (see regulator/regulator.yaml). diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index c8d276d96798..d67bddc111e3 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -132,6 +132,11 @@ #define AT803X_MIN_DOWNSHIFT 2 #define AT803X_MAX_DOWNSHIFT 9 +#define AT803X_MMD3_SMARTEEE_CTL1 0x805b +#define AT803X_MMD3_SMARTEEE_CTL2 0x805c +#define AT803X_MMD3_SMARTEEE_CTL3 0x805d +#define AT803X_MMD3_SMARTEEE_CTL3_LPI_EN BIT(8) + #define ATH9331_PHY_ID 0x004dd041 #define ATH8030_PHY_ID 0x004dd076 #define ATH8031_PHY_ID 0x004dd074 @@ -146,8 +151,11 @@ MODULE_LICENSE("GPL"); struct at803x_priv { int flags; #define AT803X_KEEP_PLL_ENABLED BIT(0) /* don't turn off internal PLL */ +#define AT803X_DISABLE_SMARTEEE BIT(1) u16 clk_25m_reg; u16 clk_25m_mask; + u8 smarteee_lpi_tw_1g; + u8 smarteee_lpi_tw_100m; struct regulator_dev *vddio_rdev; struct regulator_dev *vddh_rdev; struct regulator *vddio; @@ -411,13 +419,32 @@ static int at803x_parse_dt(struct phy_device *phydev) { struct device_node *node = phydev->mdio.dev.of_node; struct at803x_priv *priv = phydev->priv; - u32 freq, strength; + u32 freq, strength, tw; unsigned int sel; int ret; if (!IS_ENABLED(CONFIG_OF_MDIO)) return 0; + if (of_property_read_bool(node, "qca,disable-smarteee")) + priv->flags |= AT803X_DISABLE_SMARTEEE; + + if (!of_property_read_u32(node, "qca,smarteee-tw-us-1g", &tw)) { + if (!tw || tw > 255) { + phydev_err(phydev, "invalid qca,smarteee-tw-us-1g\n"); + return -EINVAL; + } + priv->smarteee_lpi_tw_1g = tw; + } + + if (!of_property_read_u32(node, "qca,smarteee-tw-us-100m", &tw)) { + if (!tw || tw > 255) { + phydev_err(phydev, "invalid qca,smarteee-tw-us-100m\n"); + return -EINVAL; + } + priv->smarteee_lpi_tw_100m = tw; + } + ret = of_property_read_u32(node, "qca,clk-out-frequency", &freq); if (!ret) { switch (freq) { @@ -526,6 +553,38 @@ static void at803x_remove(struct phy_device *phydev) regulator_disable(priv->vddio); } +static int at803x_smarteee_config(struct phy_device *phydev) +{ + struct at803x_priv *priv = phydev->priv; + u16 mask = 0, val = 0; + int ret; + + if (priv->flags & AT803X_DISABLE_SMARTEEE) + return phy_modify_mmd(phydev, MDIO_MMD_PCS, + AT803X_MMD3_SMARTEEE_CTL3, + AT803X_MMD3_SMARTEEE_CTL3_LPI_EN, 0); + + if (priv->smarteee_lpi_tw_1g) { + mask |= 0xff00; + val |= priv->smarteee_lpi_tw_1g << 8; + } + if (priv->smarteee_lpi_tw_100m) { + mask |= 0x00ff; + val |= priv->smarteee_lpi_tw_100m; + } + if (!mask) + return 0; + + ret = phy_modify_mmd(phydev, MDIO_MMD_PCS, AT803X_MMD3_SMARTEEE_CTL1, + mask, val); + if (ret) + return ret; + + return phy_modify_mmd(phydev, MDIO_MMD_PCS, AT803X_MMD3_SMARTEEE_CTL3, + AT803X_MMD3_SMARTEEE_CTL3_LPI_EN, + AT803X_MMD3_SMARTEEE_CTL3_LPI_EN); +} + static int at803x_clk_out_config(struct phy_device *phydev) { struct at803x_priv *priv = phydev->priv; @@ -577,6 +636,10 @@ static int at803x_config_init(struct phy_device *phydev) if (ret < 0) return ret; + ret = at803x_smarteee_config(phydev); + if (ret < 0) + return ret; + ret = at803x_clk_out_config(phydev); if (ret < 0) return ret; |