[PATCH net-next v6 6/7] net: tn40xx: prepare tn40xx driver to find phy of the TN9510 card

[Hans-Frieder Vogt via B4 Relay]

From: Hans-Frieder Vogt <hfdevel@xxxxxxx>

Prepare the tn40xx driver to load for Tehuti TN9510 cards, which require
bit 3 in the register TN40_REG_MDIO_CMD_STAT to be set. The function of bit
3 is unclear, but may have something to do with the length of the preamble
in the MDIO communication. If bit 3 is not set, the PHY will not be found
when performing a scan for PHYs. Use the available tn40_mdio_set_speed
function which includes setting bit 3. Just move the function to before the
devm_mdio_register function, which scans the mdio bus for PHYs.

Signed-off-by: Hans-Frieder Vogt <hfdevel@xxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Reviewed-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxx>
---
 drivers/net/ethernet/tehuti/tn40_mdio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/tehuti/tn40_mdio.c b/drivers/net/ethernet/tehuti/tn40_mdio.c
index 342b4a6317021578bbbce1f38ae1b1e909fe9faf..973785cde8ef940b804589c650830f385164402c 100644
--- a/drivers/net/ethernet/tehuti/tn40_mdio.c
+++ b/drivers/net/ethernet/tehuti/tn40_mdio.c
@@ -200,13 +200,13 @@ int tn40_mdiobus_init(struct tn40_priv *priv)
 		}
 	}
 
+	tn40_mdio_set_speed(priv, TN40_MDIO_SPEED_6MHZ);
 	ret = devm_mdiobus_register(&pdev->dev, bus);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register mdiobus %d %u %u\n",
 			ret, bus->state, MDIOBUS_UNREGISTERED);
 		goto err_swnodes_cleanup;
 	}
-	tn40_mdio_set_speed(priv, TN40_MDIO_SPEED_6MHZ);
 	return 0;
 
 err_swnodes_unregister:

-- 
2.47.2