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phy: add the IC+ IP1001 driver

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This patch adds the IC+ IP1001 (Gigabit Ethernet Transceiver) driver.
I've had to add an additional delay (2ns) to adjust RX clock phase at
GMII/ RGMII interface (according to the PHY data-sheet). This helps to
have the RGMII working on some ST platforms.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Giuseppe CAVALLARO 2010-12-08 23:05:13 +00:00 committed by David S. Miller
parent d9ca676bcb
commit 377ecca9ba
2 changed files with 55 additions and 6 deletions
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2
drivers/net/phy/Kconfig
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@ -64,7 +64,7 @@ config BCM63XX_PHY
config ICPLUS_PHY
tristate "Drivers for ICPlus PHYs"
---help---
Currently supports the IP175C PHY.
Currently supports the IP175C and IP1001 PHYs.
config REALTEK_PHY
tristate "Drivers for Realtek PHYs"

59
drivers/net/phy/icplus.c
View File

@ -30,7 +30,7 @@
#include <asm/irq.h>
#include <asm/uaccess.h>
MODULE_DESCRIPTION("ICPlus IP175C PHY driver");
MODULE_DESCRIPTION("ICPlus IP175C/IC1001 PHY drivers");
MODULE_AUTHOR("Michael Barkowski");
MODULE_LICENSE("GPL");
@ -89,6 +89,33 @@ static int ip175c_config_init(struct phy_device *phydev)
return 0;
}
static int ip1001_config_init(struct phy_device *phydev)
{
int err, value;
/* Software Reset PHY */
value = phy_read(phydev, MII_BMCR);
value |= BMCR_RESET;
err = phy_write(phydev, MII_BMCR, value);
if (err < 0)
return err;
do {
value = phy_read(phydev, MII_BMCR);
} while (value & BMCR_RESET);
/* Additional delay (2ns) used to adjust RX clock phase
* at GMII/ RGMII interface */
value = phy_read(phydev, 16);
value |= 0x3;
err = phy_write(phydev, 16, value);
if (err < 0)
return err;
return err;
}
static int ip175c_read_status(struct phy_device *phydev)
{
if (phydev->addr == 4) /* WAN port */
@ -121,21 +148,43 @@ static struct phy_driver ip175c_driver = {
.driver = { .owner = THIS_MODULE,},
};
static int __init ip175c_init(void)
static struct phy_driver ip1001_driver = {
.phy_id = 0x02430d90,
.name = "ICPlus IP1001",
.phy_id_mask = 0x0ffffff0,
.features = PHY_GBIT_FEATURES | SUPPORTED_Pause |
SUPPORTED_Asym_Pause,
.config_init = &ip1001_config_init,
.config_aneg = &genphy_config_aneg,
.read_status = &genphy_read_status,
.suspend = genphy_suspend,
.resume = genphy_resume,
.driver = { .owner = THIS_MODULE,},
};
static int __init icplus_init(void)
{
int ret = 0;
ret = phy_driver_register(&ip1001_driver);
if (ret < 0)
return -ENODEV;
return phy_driver_register(&ip175c_driver);
}
static void __exit ip175c_exit(void)
static void __exit icplus_exit(void)
{
phy_driver_unregister(&ip1001_driver);
phy_driver_unregister(&ip175c_driver);
}
module_init(ip175c_init);
module_exit(ip175c_exit);
module_init(icplus_init);
module_exit(icplus_exit);
static struct mdio_device_id __maybe_unused icplus_tbl[] = {
{ 0x02430d80, 0x0ffffff0 },
{ 0x02430d90, 0x0ffffff0 },
{ }
};