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/dp83867.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/dp83867.c')
| -rw-r--r-- | drivers/net/phy/dp83867.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/phy/dp83867.c b/drivers/net/phy/dp83867.c index c1451df430ac..063266cafe9c 100644 --- a/drivers/net/phy/dp83867.c +++ b/drivers/net/phy/dp83867.c @@ -1009,8 +1009,11 @@ static void dp83867_link_change_notify(struct phy_device *phydev) } } -static int dp83867_loopback(struct phy_device *phydev, bool enable) +static int dp83867_loopback(struct phy_device *phydev, bool enable, int speed) { + if (enable && speed) + return -EOPNOTSUPP; + return phy_modify(phydev, MII_BMCR, BMCR_LOOPBACK, enable ? BMCR_LOOPBACK : 0); } |