Existing genphy_loopback() is not applicable for Marvell PHY. So,
adding Marvell specific PHY loopback operation by only setting(enable) or
clearing(disable) BMCR_LOOPBACK bit.
Tested working on Marvell 88E1510.
Fixes: 014068dcb5b1 ("net: phy: genphy_loopback: add link speed configuration")
Cc: <stable@xxxxxxxxxxxxxxx> # 5.15.x
Signed-off-by: Mohammad Athari Bin Ismail <mohammad.athari.ismail@xxxxxxxxx>
---
drivers/net/phy/marvell.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index 4fcfca4e1702..2a73a959b48b 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -1932,6 +1932,12 @@ static void marvell_get_stats(struct phy_device *phydev,
data[i] = marvell_get_stat(phydev, i);
}
+static int marvell_loopback(struct phy_device *phydev, bool enable)
+{
+ return phy_modify(phydev, MII_BMCR, BMCR_LOOPBACK,
+ enable ? BMCR_LOOPBACK : 0);
+}
+
static int marvell_vct5_wait_complete(struct phy_device *phydev)
{
int i;
@@ -3078,7 +3084,7 @@ static struct phy_driver marvell_drivers[] = {
.get_sset_count = marvell_get_sset_count,
.get_strings = marvell_get_strings,
.get_stats = marvell_get_stats,
- .set_loopback = genphy_loopback,
+ .set_loopback = marvell_loopback,
.get_tunable = m88e1011_get_tunable,
.set_tunable = m88e1011_set_tunable,
.cable_test_start = marvell_vct7_cable_test_start,
--
2.17.1
