2 * Intel LXT971/LXT972 PHY Driver for TI DaVinci
3 * (TMS320DM644x) based boards.
5 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
7 * --------------------------------------------------------
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 #include <asm/arch/emac_defs.h>
33 #ifdef CONFIG_DRIVER_TI_EMAC
37 int lxt972_is_phy_connected(int phy_addr)
41 if (!dm644x_eth_phy_read(phy_addr, PHY_COMMON_ID1, &id1))
43 if (!dm644x_eth_phy_read(phy_addr, PHY_COMMON_ID2, &id2))
46 if ((id1 == (0x0013)) && ((id2 & 0xfff0) == 0x78e0))
52 int lxt972_get_link_speed(int phy_addr)
55 volatile emac_regs* emac = (emac_regs *)EMAC_BASE_ADDR;
57 if (!dm644x_eth_phy_read(phy_addr, PHY_LXT971_STAT2, &stat1))
60 if (!(stat1 & PHY_LXT971_STAT2_LINK)) /* link up? */
63 if (!dm644x_eth_phy_read(phy_addr, PHY_LXT971_DIG_CFG, &tmp))
66 tmp |= PHY_LXT971_DIG_CFG_MII_DRIVE;
68 dm644x_eth_phy_write(phy_addr, PHY_LXT971_DIG_CFG, tmp);
70 if (!dm644x_eth_phy_read(phy_addr, PHY_LXT971_DIG_CFG, &tmp))
74 /* Speed doesn't matter, there is no setting for it in EMAC... */
75 if (stat1 & PHY_LXT971_STAT2_100BTX) {
76 if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
77 /* set DM644x EMAC for Full Duplex */
78 emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE | EMAC_MACCONTROL_FULLDUPLEX_ENABLE;
80 /*set DM644x EMAC for Half Duplex */
81 emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE;
86 if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
87 /* set DM644x EMAC for Full Duplex */
88 emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE | EMAC_MACCONTROL_FULLDUPLEX_ENABLE;
90 /*set DM644x EMAC for Half Duplex */
91 emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE;
101 int lxt972_init_phy(int phy_addr)
105 if (!lxt972_get_link_speed(phy_addr)) {
106 /* Try another time */
107 ret = lxt972_get_link_speed(phy_addr);
110 /* Disable PHY Interrupts */
111 dm644x_eth_phy_write(phy_addr, PHY_LXT971_INT_ENABLE, 0);
117 int lxt972_auto_negotiate(int phy_addr)
122 if (!dm644x_eth_phy_read(phy_addr, PHY_COMMON_CTRL, &tmp))
125 /* Restart Auto_negotiation */
126 tmp |= PHY_COMMON_CTRL_RES_AUTO;
127 dm644x_eth_phy_write(phy_addr, PHY_COMMON_CTRL, tmp);
129 /*check AutoNegotiate complete */
131 if (!dm644x_eth_phy_read(phy_addr, PHY_COMMON_STAT, &tmp))
134 if (!(tmp & PHY_COMMON_STAT_AN_COMP))
137 return (lxt972_get_link_speed(phy_addr));
140 #endif /* CONFIG_CMD_NET */
142 #endif /* CONFIG_DRIVER_ETHER */