Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 377ecca9 authored by Giuseppe CAVALLARO's avatar Giuseppe CAVALLARO Committed by David S. Miller
Browse files

phy: add the IC+ IP1001 driver 



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: default avatarGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d9ca676b

drivers/net/phy/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -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"

drivers/net/phy/icplus.c

+54 −5
Original line number Diff line number Diff line
@@ -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 },

	{ }

};