From 07cfe3a557564ad7d982625ce1f5d8b05a016f68 Mon Sep 17 00:00:00 2001 From: Hans-Frieder Vogt Date: Sat, 22 Mar 2025 11:45:57 +0100 Subject: [PATCH] net: tn40xx: prepare tn40xx driver to find phy of the TN9510 card 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 Reviewed-by: Andrew Lunn Reviewed-by: FUJITA Tomonori Link: https://patch.msgid.link/20250322-tn9510-v3a-v7-6-672a9a3d8628@gmx.net Signed-off-by: Jakub Kicinski --- 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 5bb0cbc87d06..fb1a4a2e4dbc 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: