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net: phy: realtek: add support for RTL8211C

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RTL8211C has an issue when operating in Gigabit slave mode, therefore
genphy driver can't be used. See also this U-boot change.
https://lists.denx.de/pipermail/u-boot/2016-March/249712.html

Add a PHY driver for this chip with the quirk to force Gigabit master
mode. As a note: This will make it impossible to connect two network
ports directly which both are driven by a RTl8211C.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2018-07-02 08:08:13 +02:00 committed by David S. Miller
parent 9868c0b2eb
commit cf87915cb9
1 changed files with 17 additions and 0 deletions
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17
drivers/net/phy/realtek.c
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@ -150,6 +150,15 @@ static int rtl8211_config_aneg(struct phy_device *phydev)
return 0;
}
static int rtl8211c_config_init(struct phy_device *phydev)
{
/* RTL8211C has an issue when operating in Gigabit slave mode */
phy_set_bits(phydev, MII_CTRL1000,
CTL1000_ENABLE_MASTER | CTL1000_AS_MASTER);
return genphy_config_init(phydev);
}
static int rtl8211f_config_init(struct phy_device *phydev)
{
int ret;
@ -220,6 +229,14 @@ static struct phy_driver realtek_drvs[] = {
.write_mmd = &genphy_write_mmd_unsupported,
.suspend = rtl8211b_suspend,
.resume = rtl8211b_resume,
}, {
.phy_id = 0x001cc913,
.name = "RTL8211C Gigabit Ethernet",
.phy_id_mask = 0x001fffff,
.features = PHY_GBIT_FEATURES,
.config_init = rtl8211c_config_init,
.read_mmd = &genphy_read_mmd_unsupported,
.write_mmd = &genphy_write_mmd_unsupported,
}, {
.phy_id = 0x001cc914,
.name = "RTL8211DN Gigabit Ethernet",