From cf87915cb9f873742135e786d12d42a35eea7538 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Mon, 2 Jul 2018 08:08:13 +0200 Subject: [PATCH] net: phy: realtek: add support for RTL8211C 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 Signed-off-by: David S. Miller --- drivers/net/phy/realtek.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index 7b516e5d4f7f..f8f127831a92 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -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", -- 2.30.2