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