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net: phy: add support for Micrel's KSZ9021 

Add the gigabit phy KSZ9021.
Also, add function ksz9021_phy_extended_write
/_read for access to the phys extended registers.
The environment variable "disable_giga"
can be used to disable 1000baseTx.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
This commit is contained in:
Troy Kisky 2012-02-07 14:08:48 +00:00 committed by Albert ARIBAUD
parent 13947f43c9
commit 8682aba7da
3 changed files with 104 additions and 0 deletions
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87
drivers/net/phy/micrel.c
View File

@ -20,6 +20,9 @@
* author Andy Fleming
*
*/
#include <config.h>
#include <common.h>
#include <micrel.h>
#include <phy.h>
static struct phy_driver KSZ804_driver = {
@ -42,10 +45,94 @@ static struct phy_driver KS8721_driver = {
.shutdown = &genphy_shutdown,
};
/* ksz9021 PHY Registers */
#define MII_KSZ9021_EXTENDED_CTRL 0x0b
#define MII_KSZ9021_EXTENDED_DATAW 0x0c
#define MII_KSZ9021_EXTENDED_DATAR 0x0d
#define MII_KSZ9021_PHY_CTL 0x1f
#define MIIM_KSZ9021_PHYCTL_1000 (1 << 6)
#define MIIM_KSZ9021_PHYCTL_100 (1 << 5)
#define MIIM_KSZ9021_PHYCTL_10 (1 << 4)
#define MIIM_KSZ9021_PHYCTL_DUPLEX (1 << 3)
#define CTRL1000_PREFER_MASTER (1 << 10)
#define CTRL1000_CONFIG_MASTER (1 << 11)
#define CTRL1000_MANUAL_CONFIG (1 << 12)
int ksz9021_phy_extended_write(struct phy_device *phydev, int regnum, u16 val)
{
/* extended registers */
phy_write(phydev, MDIO_DEVAD_NONE,
MII_KSZ9021_EXTENDED_CTRL, regnum | 0x8000);
return phy_write(phydev, MDIO_DEVAD_NONE,
MII_KSZ9021_EXTENDED_DATAW, val);
}
int ksz9021_phy_extended_read(struct phy_device *phydev, int regnum)
{
/* extended registers */
phy_write(phydev, MDIO_DEVAD_NONE, MII_KSZ9021_EXTENDED_CTRL, regnum);
return phy_read(phydev, MDIO_DEVAD_NONE, MII_KSZ9021_EXTENDED_DATAR);
}
/* Micrel ksz9021 */
static int ksz9021_config(struct phy_device *phydev)
{
unsigned ctrl1000 = 0;
const unsigned master = CTRL1000_PREFER_MASTER |
CTRL1000_CONFIG_MASTER | CTRL1000_MANUAL_CONFIG;
unsigned features = phydev->drv->features;
if (getenv("disable_giga"))
features &= ~(SUPPORTED_1000baseT_Half |
SUPPORTED_1000baseT_Full);
/* force master mode for 1000BaseT due to chip errata */
if (features & SUPPORTED_1000baseT_Half)
ctrl1000 |= ADVERTISE_1000HALF | master;
if (features & SUPPORTED_1000baseT_Full)
ctrl1000 |= ADVERTISE_1000FULL | master;
phydev->advertising = phydev->supported = features;
phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, ctrl1000);
genphy_config_aneg(phydev);
genphy_restart_aneg(phydev);
return 0;
}
static int ksz9021_startup(struct phy_device *phydev)
{
unsigned phy_ctl;
genphy_update_link(phydev);
phy_ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_KSZ9021_PHY_CTL);
if (phy_ctl & MIIM_KSZ9021_PHYCTL_DUPLEX)
phydev->duplex = DUPLEX_FULL;
else
phydev->duplex = DUPLEX_HALF;
if (phy_ctl & MIIM_KSZ9021_PHYCTL_1000)
phydev->speed = SPEED_1000;
else if (phy_ctl & MIIM_KSZ9021_PHYCTL_100)
phydev->speed = SPEED_100;
else if (phy_ctl & MIIM_KSZ9021_PHYCTL_10)
phydev->speed = SPEED_10;
return 0;
}
static struct phy_driver ksz9021_driver = {
.name = "Micrel ksz9021",
.uid = 0x221610,
.mask = 0xfffff0,
.features = PHY_GBIT_FEATURES,
.config = &ksz9021_config,
.startup = &ksz9021_startup,
.shutdown = &genphy_shutdown,
};
int phy_micrel_init(void)
{
phy_register(&KSZ804_driver);
phy_register(&KS8721_driver);
phy_register(&ksz9021_driver);
return 0;
}

16
include/micrel.h Normal file
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@ -0,0 +1,16 @@
#ifndef _MICREL_H
#define MII_KSZ9021_EXT_COMMON_CTRL 0x100
#define MII_KSZ9021_EXT_STRAP_STATUS 0x101
#define MII_KSZ9021_EXT_OP_STRAP_OVERRIDE 0x102
#define MII_KSZ9021_EXT_OP_STRAP_STATUS 0x103
#define MII_KSZ9021_EXT_RGMII_CLOCK_SKEW 0x104
#define MII_KSZ9021_EXT_RGMII_RX_DATA_SKEW 0x105
#define MII_KSZ9021_EXT_RGMII_TX_DATA_SKEW 0x106
#define MII_KSZ9021_EXT_ANALOG_TEST 0x107
struct phy_device;
int ksz9021_phy_extended_write(struct phy_device *phydev, int regnum, u16 val);
int ksz9021_phy_extended_read(struct phy_device *phydev, int regnum);
#endif

1
include/phy.h
View File

@ -207,6 +207,7 @@ int phy_config(struct phy_device *phydev);
int phy_shutdown(struct phy_device *phydev);
int phy_register(struct phy_driver *drv);
int genphy_config_aneg(struct phy_device *phydev);
int genphy_restart_aneg(struct phy_device *phydev);
int genphy_update_link(struct phy_device *phydev);
int genphy_config(struct phy_device *phydev);
int genphy_startup(struct phy_device *phydev);