The standard way of putting a PHY device into loopback is most often suitable for testing. This is going to be necessary in a subsequent patch that adds RGII debugging capability using the loopback feature.
Clause 45 PHYs are not supported through a generic method yet. Signed-off-by: Florian Fainelli <[email protected]> --- drivers/net/phy/phy_device.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 9d2bbb13293e..7fa728c44632 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -1513,8 +1513,10 @@ int phy_loopback(struct phy_device *phydev, bool enable) if (phydev->drv && phydrv->set_loopback) ret = phydrv->set_loopback(phydev, enable); - else + else if (phydev->is_c45) ret = -EOPNOTSUPP; + else + ret = genphy_loopback(phydev, enable); if (ret) goto out; -- 2.17.1
