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/*
* ET1011C PHY driver
*
* Derived from Linux kernel driver by Chaithrika U S
* Copyright (C) 2013, Texas Instruments, Incorporated - http://www.ti.com/
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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;
}
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