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-rw-r--r--target/linux/generic/pending-4.9/734-net-phy-at803x-allow-to-configure-via-pdata.patch150
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
+