diff options
| author | Gerhard Engleder <gerhard@engleder-embedded.com> | 2025-03-12 21:30:06 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-03-20 08:45:08 +0100 |
| commit | 45456e38c44eda2f1285601398fd289b3cec7002 (patch) | |
| tree | 0fb30d25ebcacd9a76dee45d1c15910c3665f9cc /drivers/net/phy/phy-c45.c | |
| parent | 3d97da0ee6253d79add79254015623a2cdff9634 (diff) | |
net: phy: Allow loopback speed selection for PHY drivers
PHY drivers support loopback mode, but it is not possible to select the
speed of the loopback mode. The speed is chosen by the set_loopback()
operation of the PHY driver. Same is valid for genphy_loopback().
There are PHYs that support loopback with different speeds. Extend
set_loopback() to make loopback speed selection possible.
Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250312203010.47429-2-gerhard@engleder-embedded.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/phy/phy-c45.c')
| -rw-r--r-- | drivers/net/phy/phy-c45.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c index 0bcbdce38107..8a0ffc3174ec 100644 --- a/drivers/net/phy/phy-c45.c +++ b/drivers/net/phy/phy-c45.c @@ -1228,8 +1228,11 @@ int gen10g_config_aneg(struct phy_device *phydev) } EXPORT_SYMBOL_GPL(gen10g_config_aneg); -int genphy_c45_loopback(struct phy_device *phydev, bool enable) +int genphy_c45_loopback(struct phy_device *phydev, bool enable, int speed) { + if (enable && speed) + return -EOPNOTSUPP; + return phy_modify_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, MDIO_PCS_CTRL1_LOOPBACK, enable ? MDIO_PCS_CTRL1_LOOPBACK : 0); |