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/*
* RealTek PHY drivers
*
* SPDX-License-Identifier: GPL-2.0+
*
* Copyright 2010-2011, 2015 Freescale Semiconductor, Inc.
* author Andy Fleming
* Copyright 2016 Karsten Merker <merker@debian.org>
*/
#include <config.h>
#include <common.h>
#include <linux/bitops.h>
#include <phy.h>
#define PHY_RTL8211x_FORCE_MASTER BIT(1)
#define PHY_AUTONEGOTIATE_TIMEOUT 5000
/* RTL8211x 1000BASE-T Control Register */
#define MIIM_RTL8211x_CTRL1000T_MSCE BIT(12);
#define MIIM_RTL8211x_CTRL1000T_MASTER BIT(11);
/* RTL8211x PHY Status Register */
#define MIIM_RTL8211x_PHY_STATUS 0x11
#define MIIM_RTL8211x_PHYSTAT_SPEED 0xc000
#define MIIM_RTL8211x_PHYSTAT_GBIT 0x8000
#define MIIM_RTL8211x_PHYSTAT_100 0x4000
#define MIIM_RTL8211x_PHYSTAT_DUPLEX 0x2000
#define MIIM_RTL8211x_PHYSTAT_SPDDONE 0x0800
#define MIIM_RTL8211x_PHYSTAT_LINK 0x0400
/* RTL8211x PHY Interrupt Enable Register */
#define MIIM_RTL8211x_PHY_INER 0x12
#define MIIM_RTL8211x_PHY_INTR_ENA 0x9f01
#define MIIM_RTL8211x_PHY_INTR_DIS 0x0000
/* RTL8211x PHY Interrupt Status Register */
#define MIIM_RTL8211x_PHY_INSR 0x13
/* RTL8211F PHY Status Register */
#define MIIM_RTL8211F_PHY_STATUS 0x1a
#define MIIM_RTL8211F_AUTONEG_ENABLE 0x1000
#define MIIM_RTL8211F_PHYSTAT_SPEED 0x0030
#define MIIM_RTL8211F_PHYSTAT_GBIT 0x0020
#define MIIM_RTL8211F_PHYSTAT_100 0x0010
#define MIIM_RTL8211F_PHYSTAT_DUPLEX 0x0008
#define MIIM_RTL8211F_PHYSTAT_SPDDONE 0x0800
#define MIIM_RTL8211F_PHYSTAT_LINK 0x0004
#define MIIM_RTL8211F_PAGE_SELECT 0x1f
#define MIIM_RTL8211F_TX_DELAY 0x100
#define MIIM_RTL8211F_LCR 0x10
static int rtl8211b_probe(struct phy_device *phydev)
{
#ifdef CONFIG_RTL8211X_PHY_FORCE_MASTER
phydev->flags |= PHY_RTL8211x_FORCE_MASTER;
#endif
return 0;
}
/* RealTek RTL8211x */
static int rtl8211x_config(struct phy_device *phydev)
{
phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_RESET);
/* mask interrupt at init; if the interrupt is
* needed indeed, it should be explicitly enabled
*/
phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_INER,
MIIM_RTL8211x_PHY_INTR_DIS);
if (phydev->flags & PHY_RTL8211x_FORCE_MASTER) {
unsigned int reg;
reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_CTRL1000);
/* force manual master/slave configuration */
reg |= MIIM_RTL8211x_CTRL1000T_MSCE;
/* force master mode */
reg |= MIIM_RTL8211x_CTRL1000T_MASTER;
phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, reg);
}
/* read interrupt status just to clear it */
phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_INER);
genphy_config_aneg(phydev);
return 0;
}
static int rtl8211f_config(struct phy_device *phydev)
{
u16 reg;
phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_RESET);
if (phydev->interface == PHY_INTERFACE_MODE_RGMII) {
/* enable TXDLY */
phy_write(phydev, MDIO_DEVAD_NONE,
MIIM_RTL8211F_PAGE_SELECT, 0xd08);
reg = phy_read(phydev, MDIO_DEVAD_NONE, 0x11);
reg |= MIIM_RTL8211F_TX_DELAY;
phy_write(phydev, MDIO_DEVAD_NONE, 0x11, reg);
/* restore to default page 0 */
phy_write(phydev, MDIO_DEVAD_NONE,
MIIM_RTL8211F_PAGE_SELECT, 0x0);
}
/* Set green LED for Link, yellow LED for Active */
phy_write(phydev, MDIO_DEVAD_NONE,
MIIM_RTL8211F_PAGE_SELECT, 0xd04);
phy_write(phydev, MDIO_DEVAD_NONE, 0x10, 0x617f);
phy_write(phydev, MDIO_DEVAD_NONE,
MIIM_RTL8211F_PAGE_SELECT, 0x0);
genphy_config_aneg(phydev);
return 0;
}
static int rtl8211x_parse_status(struct phy_device *phydev)
{
unsigned int speed;
unsigned int mii_reg;
mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_STATUS);
if (!(mii_reg & MIIM_RTL8211x_PHYSTAT_SPDDONE)) {
int i = 0;
/* in case of timeout ->link is cleared */
phydev->link = 1;
puts("Waiting for PHY realtime link");
while (!(mii_reg & MIIM_RTL8211x_PHYSTAT_SPDDONE)) {
/* Timeout reached ? */
if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
puts(" TIMEOUT !\n");
phydev->link = 0;
break;
}
if ((i++ % 1000) == 0)
putc('.');
udelay(1000); /* 1 ms */
mii_reg = phy_read(phydev, MDIO_DEVAD_NONE,
MIIM_RTL8211x_PHY_STATUS);
}
puts(" done\n");
udelay(500000); /* another 500 ms (results in faster booting) */
} else {
if (mii_reg & MIIM_RTL8211x_PHYSTAT_LINK)
phydev->link = 1;
else
phydev->link = 0;
}
if (mii_reg & MIIM_RTL8211x_PHYSTAT_DUPLEX)
phydev->duplex = DUPLEX_FULL;
else
phydev->duplex = DUPLEX_HALF;
speed = (mii_reg & MIIM_RTL8211x_PHYSTAT_SPEED);
switch (speed) {
case MIIM_RTL8211x_PHYSTAT_GBIT:
phydev->speed = SPEED_1000;
break;
case MIIM_RTL8211x_PHYSTAT_100:
phydev->speed = SPEED_100;
break;
default:
phydev->speed = SPEED_10;
}
return 0;
}
static int rtl8211f_parse_status(struct phy_device *phydev)
{
unsigned int speed;
unsigned int mii_reg;
int i = 0;
phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT, 0xa43);
mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PHY_STATUS);
phydev->link = 1;
while (!(mii_reg & MIIM_RTL8211F_PHYSTAT_LINK)) {
if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
puts(" TIMEOUT !\n");
phydev->link = 0;
break;
}
if ((i++ % 1000) == 0)
putc('.');
udelay(1000);
mii_reg = phy_read(phydev, MDIO_DEVAD_NONE,
MIIM_RTL8211F_PHY_STATUS);
}
if (mii_reg & MIIM_RTL8211F_PHYSTAT_DUPLEX)
phydev->duplex = DUPLEX_FULL;
else
phydev->duplex = DUPLEX_HALF;
speed = (mii_reg & MIIM_RTL8211F_PHYSTAT_SPEED);
switch (speed) {
case MIIM_RTL8211F_PHYSTAT_GBIT:
phydev->speed = SPEED_1000;
break;
case MIIM_RTL8211F_PHYSTAT_100:
phydev->speed = SPEED_100;
break;
default:
phydev->speed = SPEED_10;
}
return 0;
}
static int rtl8211x_startup(struct phy_device *phydev)
{
int ret;
/* Read the Status (2x to make sure link is right) */
ret = genphy_update_link(phydev);
if (ret)
return ret;
return rtl8211x_parse_status(phydev);
}
static int rtl8211e_startup(struct phy_device *phydev)
{
int ret;
ret = genphy_update_link(phydev);
if (ret)
return ret;
return genphy_parse_link(phydev);
}
static int rtl8211f_startup(struct phy_device *phydev)
{
int ret;
/* Read the Status (2x to make sure link is right) */
ret = genphy_update_link(phydev);
if (ret)
return ret;
/* Read the Status (2x to make sure link is right) */
return rtl8211f_parse_status(phydev);
}
/* Support for RTL8211B PHY */
static struct phy_driver RTL8211B_driver = {
.name = "RealTek RTL8211B",
.uid = 0x1cc912,
.mask = 0xffffff,
.features = PHY_GBIT_FEATURES,
.probe = &rtl8211b_probe,
.config = &rtl8211x_config,
.startup = &rtl8211x_startup,
.shutdown = &genphy_shutdown,
};
/* Support for RTL8211E-VB-CG, RTL8211E-VL-CG and RTL8211EG-VB-CG PHYs */
static struct phy_driver RTL8211E_driver = {
.name = "RealTek RTL8211E",
.uid = 0x1cc915,
.mask = 0xffffff,
.features = PHY_GBIT_FEATURES,
.config = &rtl8211x_config,
.startup = &rtl8211e_startup,
.shutdown = &genphy_shutdown,
};
/* Support for RTL8211DN PHY */
static struct phy_driver RTL8211DN_driver = {
.name = "RealTek RTL8211DN",
.uid = 0x1cc914,
.mask = 0xffffff,
.features = PHY_GBIT_FEATURES,
.config = &rtl8211x_config,
.startup = &rtl8211x_startup,
.shutdown = &genphy_shutdown,
};
/* Support for RTL8211F PHY */
static struct phy_driver RTL8211F_driver = {
.name = "RealTek RTL8211F",
.uid = 0x1cc916,
.mask = 0xffffff,
.features = PHY_GBIT_FEATURES,
.config = &rtl8211f_config,
.startup = &rtl8211f_startup,
.shutdown = &genphy_shutdown,
};
int phy_realtek_init(void)
{
phy_register(&RTL8211B_driver);
phy_register(&RTL8211E_driver);
phy_register(&RTL8211F_driver);
phy_register(&RTL8211DN_driver);
return 0;
}
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