diff options
Diffstat (limited to 'target/linux/generic/pending-4.9/734-net-phy-at803x-allow-to-configure-via-pdata.patch')
| -rw-r--r-- | target/linux/generic/pending-4.9/734-net-phy-at803x-allow-to-configure-via-pdata.patch | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.9/734-net-phy-at803x-allow-to-configure-via-pdata.patch b/target/linux/generic/pending-4.9/734-net-phy-at803x-allow-to-configure-via-pdata.patch new file mode 100644 index 0000000000..e996d95093 --- /dev/null +++ b/target/linux/generic/pending-4.9/734-net-phy-at803x-allow-to-configure-via-pdata.patch @@ -0,0 +1,150 @@ +From: Gabor Juhos <juhosg@openwrt.org> +Subject: net: phy: allow to configure AR803x PHYs via platform data + +Add a patch for the at803x phy driver, in order to be able +to configure some register settings via platform data. + +Signed-off-by: Gabor Juhos <juhosg@openwrt.org> +--- + drivers/net/phy/at803x.c | 56 ++++++++++++++++++++++++++++++++ + include/linux/platform_data/phy-at803x.h | 11 +++++++ + 2 files changed, 67 insertions(+) + create mode 100644 include/linux/platform_data/phy-at803x.h + +diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c +index c0f45dde60aa..4a55130dcb1c 100644 +--- a/drivers/net/phy/at803x.c ++++ b/drivers/net/phy/at803x.c +@@ -12,12 +12,14 @@ + */ + + #include <linux/phy.h> ++#include <linux/mdio.h> + #include <linux/module.h> + #include <linux/string.h> + #include <linux/netdevice.h> + #include <linux/etherdevice.h> + #include <linux/of_gpio.h> + #include <linux/gpio/consumer.h> ++#include <linux/platform_data/phy-at803x.h> + + #define AT803X_INTR_ENABLE 0x12 + #define AT803X_INTR_ENABLE_AUTONEG_ERR BIT(15) +@@ -45,6 +47,11 @@ + #define AT803X_REG_CHIP_CONFIG 0x1f + #define AT803X_BT_BX_REG_SEL 0x8000 + ++#define AT803X_PCS_SMART_EEE_CTRL3 0x805D ++#define AT803X_SMART_EEE_CTRL3_LPI_TX_DELAY_SEL_MASK 0x3 ++#define AT803X_SMART_EEE_CTRL3_LPI_TX_DELAY_SEL_SHIFT 12 ++#define AT803X_SMART_EEE_CTRL3_LPI_EN BIT(8) ++ + #define AT803X_DEBUG_ADDR 0x1D + #define AT803X_DEBUG_DATA 0x1E + +@@ -72,6 +79,7 @@ MODULE_LICENSE("GPL"); + struct at803x_priv { + bool phy_reset:1; + struct gpio_desc *gpiod_reset; ++ int prev_speed; + }; + + struct at803x_context { +@@ -276,8 +284,16 @@ static int at803x_probe(struct phy_device *phydev) + return 0; + } + ++static void at803x_disable_smarteee(struct phy_device *phydev) ++{ ++ phy_write_mmd(phydev, MDIO_MMD_PCS, AT803X_PCS_SMART_EEE_CTRL3, ++ 1 << AT803X_SMART_EEE_CTRL3_LPI_TX_DELAY_SEL_SHIFT); ++ phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0); ++} ++ + static int at803x_config_init(struct phy_device *phydev) + { ++ struct at803x_platform_data *pdata; + int ret; + + ret = genphy_config_init(phydev); +@@ -298,6 +314,26 @@ static int at803x_config_init(struct phy_device *phydev) + return ret; + } + ++ pdata = dev_get_platdata(&phydev->mdio.dev); ++ if (pdata) { ++ if (pdata->disable_smarteee) ++ at803x_disable_smarteee(phydev); ++ ++ if (pdata->enable_rgmii_rx_delay) ++ at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_0, 0, ++ AT803X_DEBUG_RX_CLK_DLY_EN); ++ else ++ at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_0, ++ AT803X_DEBUG_RX_CLK_DLY_EN, 0); ++ ++ if (pdata->enable_rgmii_tx_delay) ++ at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_5, 0, ++ AT803X_DEBUG_TX_CLK_DLY_EN); ++ else ++ at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_5, ++ AT803X_DEBUG_TX_CLK_DLY_EN, 0); ++ } ++ + return 0; + } + +@@ -335,6 +371,8 @@ static int at803x_config_intr(struct phy_device *phydev) + static void at803x_link_change_notify(struct phy_device *phydev) + { + struct at803x_priv *priv = phydev->priv; ++ struct at803x_platform_data *pdata; ++ pdata = dev_get_platdata(&phydev->mdio.dev); + + /* + * Conduct a hardware reset for AT8030/2 every time a link loss is +@@ -363,6 +401,24 @@ static void at803x_link_change_notify(struct phy_device *phydev) + } else { + priv->phy_reset = false; + } ++ if (pdata && pdata->fixup_rgmii_tx_delay && ++ phydev->speed != priv->prev_speed) { ++ switch (phydev->speed) { ++ case SPEED_10: ++ case SPEED_100: ++ at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_5, 0, ++ AT803X_DEBUG_TX_CLK_DLY_EN); ++ break; ++ case SPEED_1000: ++ at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_5, ++ AT803X_DEBUG_TX_CLK_DLY_EN, 0); ++ break; ++ default: ++ break; ++ } ++ ++ priv->prev_speed = phydev->speed; ++ } + } + + static int at803x_aneg_done(struct phy_device *phydev) +diff --git a/include/linux/platform_data/phy-at803x.h b/include/linux/platform_data/phy-at803x.h +new file mode 100644 +index 000000000000..a5df74b4f38d +--- /dev/null ++++ b/include/linux/platform_data/phy-at803x.h +@@ -0,0 +1,11 @@ ++#ifndef _PHY_AT803X_PDATA_H ++#define _PHY_AT803X_PDATA_H ++ ++struct at803x_platform_data { ++ int disable_smarteee:1; ++ int enable_rgmii_tx_delay:1; ++ int enable_rgmii_rx_delay:1; ++ int fixup_rgmii_tx_delay:1; ++}; ++ ++#endif /* _PHY_AT803X_PDATA_H */ +-- +2.11.0 + |