phy: add support for ET1011C phys

Adds an ET1011C PHY driver which is derived from the
Linux kernel PHY driver (drivers/net/phy/et1011c.c)
from the v3.9-rc2 tag. Note that an errata workaround
config option is implemented to allow for TX_CLK to be
enabled even when gigabit mode is negotiated. This
workaround is used on the PG1.0 TI814X EVM.

Signed-off-by: Matt Porter <mporter@ti.com>
Reviewed-by: Tom Rini <trini@ti.com>

diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 5e90d7098db5b51ca09c303636c6fcab42d3593b..af5f4b848ceefb14d535b5c79084bbfaf49ec89c 100644 (file)
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -34,6 +34,7 @@ COBJS-$(CONFIG_PHYLIB_10G) += generic_10g.o
 COBJS-$(CONFIG_PHY_ATHEROS) += atheros.o
 COBJS-$(CONFIG_PHY_BROADCOM) += broadcom.o
 COBJS-$(CONFIG_PHY_DAVICOM) += davicom.o
+COBJS-$(CONFIG_PHY_ET1011C) += et1011c.o
 COBJS-$(CONFIG_PHY_LXT) += lxt.o
 COBJS-$(CONFIG_PHY_MARVELL) += marvell.o
 COBJS-$(CONFIG_PHY_MICREL) += micrel.o

diff --git a/drivers/net/phy/et1011c.c b/drivers/net/phy/et1011c.c
new file mode 100644 (file)
index 0000000..5e22399
--- /dev/null
+++ b/drivers/net/phy/et1011c.c
@@ -0,0 +1,110 @@
+/*
+ * ET1011C PHY driver
+ *
+ * Derived from Linux kernel driver by Chaithrika U S
+ * Copyright (C) 2013, Texas Instruments, Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+#include <config.h>
+#include <phy.h>
+
+#define ET1011C_CONFIG_REG             (0x16)
+#define ET1011C_TX_FIFO_MASK           (0x3 << 12)
+#define ET1011C_TX_FIFO_DEPTH_8                (0x0 << 12)
+#define ET1011C_TX_FIFO_DEPTH_16       (0x1 << 12)
+#define ET1011C_INTERFACE_MASK         (0x7 << 0)
+#define ET1011C_GMII_INTERFACE         (0x2 << 0)
+#define ET1011C_SYS_CLK_EN             (0x1 << 4)
+#define ET1011C_TX_CLK_EN              (0x1 << 5)
+
+#define ET1011C_STATUS_REG             (0x1A)
+#define ET1011C_DUPLEX_STATUS          (0x1 << 7)
+#define ET1011C_SPEED_MASK             (0x3 << 8)
+#define ET1011C_SPEED_1000             (0x2 << 8)
+#define ET1011C_SPEED_100              (0x1 << 8)
+#define ET1011C_SPEED_10               (0x0 << 8)
+
+static int et1011c_config(struct phy_device *phydev)
+{
+       int ctl = 0;
+       ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
+       if (ctl < 0)
+               return ctl;
+       ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 |
+                BMCR_ANENABLE);
+       /* First clear the PHY */
+       phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl | BMCR_RESET);
+
+       return genphy_config_aneg(phydev);
+}
+
+static int et1011c_parse_status(struct phy_device *phydev)
+{
+       int mii_reg;
+       int speed;
+
+       mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, ET1011C_STATUS_REG);
+
+       if (mii_reg & ET1011C_DUPLEX_STATUS)
+               phydev->duplex = DUPLEX_FULL;
+       else
+               phydev->duplex = DUPLEX_HALF;
+
+       speed = mii_reg & ET1011C_SPEED_MASK;
+       switch (speed) {
+       case ET1011C_SPEED_1000:
+               phydev->speed = SPEED_1000;
+               mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, ET1011C_CONFIG_REG);
+               mii_reg &= ~ET1011C_TX_FIFO_MASK;
+               phy_write(phydev, MDIO_DEVAD_NONE, ET1011C_CONFIG_REG,
+                         mii_reg |
+                         ET1011C_GMII_INTERFACE |
+                         ET1011C_SYS_CLK_EN |
+#ifdef CONFIG_PHY_ET1011C_TX_CLK_FIX
+                         ET1011C_TX_CLK_EN |
+#endif
+                         ET1011C_TX_FIFO_DEPTH_16);
+               break;
+       case ET1011C_SPEED_100:
+               phydev->speed = SPEED_100;
+               break;
+       case ET1011C_SPEED_10:
+               phydev->speed = SPEED_10;
+               break;
+       }
+
+       return 0;
+}
+
+static int et1011c_startup(struct phy_device *phydev)
+{
+       genphy_update_link(phydev);
+       et1011c_parse_status(phydev);
+       return 0;
+}
+
+static struct phy_driver et1011c_driver = {
+       .name           = "ET1011C",
+       .uid            = 0x0282f014,
+       .mask           = 0xfffffff0,
+       .features       = PHY_GBIT_FEATURES,
+       .config         = &et1011c_config,
+       .startup        = &et1011c_startup,
+};
+
+int phy_et1011c_init(void)
+{
+       phy_register(&et1011c_driver);
+
+       return 0;
+}

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index d0ed7666ed98cbeccee364b38dc31f77cd6ce0d5..f8c54814777882e83d17e8ad22b69abcd047f42f 100644 (file)
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -430,6 +430,9 @@ int phy_init(void)
 #ifdef CONFIG_PHY_DAVICOM
        phy_davicom_init();
 #endif
+#ifdef CONFIG_PHY_ET1011C
+       phy_et1011c_init();
+#endif
 #ifdef CONFIG_PHY_LXT
        phy_lxt_init();
 #endif

diff --git a/include/phy.h b/include/phy.h
index 58ca2730c84eac4419b384954f3f8b2c50a503cf..7b4ce744e11d1cfffdea40b3c50321c6575e8f99 100644 (file)
--- a/include/phy.h
+++ b/include/phy.h
@@ -223,6 +223,7 @@ int gen10g_discover_mmds(struct phy_device *phydev);
 int phy_atheros_init(void);
 int phy_broadcom_init(void);
 int phy_davicom_init(void);
+int phy_et1011c_init(void);
 int phy_lxt_init(void);
 int phy_marvell_init(void);
 int phy_micrel_init(void);