mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-12 14:16:17 +09:00
d54097b6c1
TN80xx has same PHY ID as TN2020, but it needs different setting to register 30.93 which used to select line, so we read register 30.32 which has bit 15:12 to indicate PHY hardware version, for TN20xx we will get 3 or 2, for TN80xx we will get 5 or 4. Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
/*
|
|
* Teranetics PHY drivers
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*
|
|
* Copyright 2010-2011 Freescale Semiconductor, Inc.
|
|
* author Andy Fleming
|
|
*
|
|
*/
|
|
#include <config.h>
|
|
#include <common.h>
|
|
#include <phy.h>
|
|
|
|
#ifndef CONFIG_PHYLIB_10G
|
|
#error The Teranetics PHY needs 10G support
|
|
#endif
|
|
|
|
int tn2020_config(struct phy_device *phydev)
|
|
{
|
|
if (phydev->port == PORT_FIBRE) {
|
|
unsigned short restart_an = (MDIO_AN_CTRL1_RESTART |
|
|
MDIO_AN_CTRL1_ENABLE |
|
|
MDIO_AN_CTRL1_XNP);
|
|
u8 phy_hwversion;
|
|
|
|
/*
|
|
* bit 15:12 of register 30.32 indicates PHY hardware
|
|
* version. It can be used to distinguish TN80xx from
|
|
* TN2020. TN2020 needs write 0x2 to 30.93, but TN80xx
|
|
* needs 0x1.
|
|
*/
|
|
phy_hwversion = (phy_read(phydev, 30, 32) >> 12) & 0xf;
|
|
if (phy_hwversion <= 3) {
|
|
phy_write(phydev, 30, 93, 2);
|
|
phy_write(phydev, MDIO_MMD_AN, MDIO_CTRL1, restart_an);
|
|
} else {
|
|
phy_write(phydev, 30, 93, 1);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int tn2020_startup(struct phy_device *phydev)
|
|
{
|
|
unsigned int timeout = 5 * 1000; /* 5 second timeout */
|
|
|
|
#define MDIO_PHYXS_LANE_READY (MDIO_PHYXS_LNSTAT_SYNC0 | \
|
|
MDIO_PHYXS_LNSTAT_SYNC1 | \
|
|
MDIO_PHYXS_LNSTAT_SYNC2 | \
|
|
MDIO_PHYXS_LNSTAT_SYNC3 | \
|
|
MDIO_PHYXS_LNSTAT_ALIGN)
|
|
|
|
/*
|
|
* Wait for the XAUI-SERDES lanes to align first. Under normal
|
|
* circumstances, this can take up to three seconds.
|
|
*/
|
|
while (--timeout) {
|
|
int reg = phy_read(phydev, MDIO_MMD_PHYXS, MDIO_PHYXS_LNSTAT);
|
|
if (reg < 0) {
|
|
printf("TN2020: Error reading from PHY at "
|
|
"address %u\n", phydev->addr);
|
|
break;
|
|
}
|
|
if ((reg & MDIO_PHYXS_LANE_READY) == MDIO_PHYXS_LANE_READY)
|
|
break;
|
|
udelay(1000);
|
|
}
|
|
if (!timeout) {
|
|
/*
|
|
* A timeout is bad, but it may not be fatal, so don't
|
|
* return an error. Display a warning instead.
|
|
*/
|
|
printf("TN2020: Timeout waiting for PHY at address %u to "
|
|
"align.\n", phydev->addr);
|
|
}
|
|
|
|
if (phydev->port != PORT_FIBRE)
|
|
return gen10g_startup(phydev);
|
|
|
|
/*
|
|
* The TN2020 only pretends to support fiber.
|
|
* It works, but it doesn't look like it works,
|
|
* so the link status reports no link.
|
|
*/
|
|
phydev->link = 1;
|
|
|
|
/* For now just lie and say it's 10G all the time */
|
|
phydev->speed = SPEED_10000;
|
|
phydev->duplex = DUPLEX_FULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct phy_driver tn2020_driver = {
|
|
.name = "Teranetics TN2020",
|
|
.uid = PHY_UID_TN2020,
|
|
.mask = 0xfffffff0,
|
|
.features = PHY_10G_FEATURES,
|
|
.mmds = (MDIO_DEVS_PMAPMD | MDIO_DEVS_PCS |
|
|
MDIO_DEVS_PHYXS | MDIO_DEVS_AN |
|
|
MDIO_DEVS_VEND1 | MDIO_DEVS_VEND2),
|
|
.config = &tn2020_config,
|
|
.startup = &tn2020_startup,
|
|
.shutdown = &gen10g_shutdown,
|
|
};
|
|
|
|
int phy_teranetics_init(void)
|
|
{
|
|
phy_register(&tn2020_driver);
|
|
|
|
return 0;
|
|
}
|