mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/*
|
|
* Intel LXT971/LXT972 PHY Driver for TI DaVinci
|
|
* (TMS320DM644x) based boards.
|
|
*
|
|
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
|
|
*
|
|
* --------------------------------------------------------
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <net.h>
|
|
#include <miiphy.h>
|
|
#include <lxt971a.h>
|
|
#include <asm/arch/emac_defs.h>
|
|
#include "../../../../../drivers/net/davinci_emac.h"
|
|
|
|
#ifdef CONFIG_DRIVER_TI_EMAC
|
|
|
|
#ifdef CONFIG_CMD_NET
|
|
|
|
int lxt972_is_phy_connected(int phy_addr)
|
|
{
|
|
u_int16_t id1, id2;
|
|
|
|
if (!davinci_eth_phy_read(phy_addr, MII_PHYSID1, &id1))
|
|
return(0);
|
|
if (!davinci_eth_phy_read(phy_addr, MII_PHYSID2, &id2))
|
|
return(0);
|
|
|
|
if ((id1 == (0x0013)) && ((id2 & 0xfff0) == 0x78e0))
|
|
return(1);
|
|
|
|
return(0);
|
|
}
|
|
|
|
int lxt972_get_link_speed(int phy_addr)
|
|
{
|
|
u_int16_t stat1, tmp;
|
|
volatile emac_regs *emac = (emac_regs *)EMAC_BASE_ADDR;
|
|
|
|
if (!davinci_eth_phy_read(phy_addr, PHY_LXT971_STAT2, &stat1))
|
|
return(0);
|
|
|
|
if (!(stat1 & PHY_LXT971_STAT2_LINK)) /* link up? */
|
|
return(0);
|
|
|
|
if (!davinci_eth_phy_read(phy_addr, PHY_LXT971_DIG_CFG, &tmp))
|
|
return(0);
|
|
|
|
tmp |= PHY_LXT971_DIG_CFG_MII_DRIVE;
|
|
|
|
davinci_eth_phy_write(phy_addr, PHY_LXT971_DIG_CFG, tmp);
|
|
/* Read back */
|
|
if (!davinci_eth_phy_read(phy_addr, PHY_LXT971_DIG_CFG, &tmp))
|
|
return(0);
|
|
|
|
/* Speed doesn't matter, there is no setting for it in EMAC... */
|
|
if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
|
|
/* set DM644x EMAC for Full Duplex */
|
|
emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE |
|
|
EMAC_MACCONTROL_FULLDUPLEX_ENABLE;
|
|
} else {
|
|
/*set DM644x EMAC for Half Duplex */
|
|
emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE;
|
|
}
|
|
|
|
return(1);
|
|
}
|
|
|
|
|
|
int lxt972_init_phy(int phy_addr)
|
|
{
|
|
int ret = 1;
|
|
|
|
if (!lxt972_get_link_speed(phy_addr)) {
|
|
/* Try another time */
|
|
ret = lxt972_get_link_speed(phy_addr);
|
|
}
|
|
|
|
/* Disable PHY Interrupts */
|
|
davinci_eth_phy_write(phy_addr, PHY_LXT971_INT_ENABLE, 0);
|
|
|
|
return(ret);
|
|
}
|
|
|
|
|
|
int lxt972_auto_negotiate(int phy_addr)
|
|
{
|
|
u_int16_t tmp;
|
|
|
|
if (!davinci_eth_phy_read(phy_addr, MII_BMCR, &tmp))
|
|
return(0);
|
|
|
|
/* Restart Auto_negotiation */
|
|
tmp |= BMCR_ANRESTART;
|
|
davinci_eth_phy_write(phy_addr, MII_BMCR, tmp);
|
|
|
|
/*check AutoNegotiate complete */
|
|
udelay (10000);
|
|
if (!davinci_eth_phy_read(phy_addr, MII_BMSR, &tmp))
|
|
return(0);
|
|
|
|
if (!(tmp & BMSR_ANEGCOMPLETE))
|
|
return(0);
|
|
|
|
return (lxt972_get_link_speed(phy_addr));
|
|
}
|
|
|
|
#endif /* CONFIG_CMD_NET */
|
|
|
|
#endif /* CONFIG_DRIVER_ETHER */
|