[PATCH AUTOSEL 4.19 76/97] lan743x: Expand phy search for LAN7431

Sasha Levin
2018-12-26T22:48:14Z

From: Bryan Whitehead <Bryan.Whitehead@microchip.com>

[ Upstream commit 0db7d253e9f0ff1a41c602429bea93df221be6ed ]

The LAN7431 uses an external phy, and it can be found anywhere in
the phy address space. This patch uses phy address 1 for LAN7430
only. And searches all addresses otherwise.

Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/microchip/lan743x_main.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index aaedf1072460..ff196a66eaaa 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -2722,8 +2722,9 @@ static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE,
"pci-%s", pci_name(adapter->pdev));

- /* set to internal PHY id */
- adapter->mdiobus->phy_mask = ~(u32)BIT(1);
+ if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_)
+ /* LAN7430 uses internal phy at address 1 */
+ adapter->mdiobus->phy_mask = ~(u32)BIT(1);

/* register mdiobus */
ret = mdiobus_register(adapter->mdiobus);
--
2.19.1