[net-next PATCH 2/2] net: macb: Use mdio child node for MDIO bus if it exists
From: Sean Anderson <hidden>
Date: 2021-10-22 16:36:15
Also in:
lkml
Subsystem:
atmel macb ethernet driver, networking drivers, the rest · Maintainers:
Théo Lebrun, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
This allows explicitly specifying which children are present on the mdio bus. Additionally, it allows for non-phy MDIO devices on the bus. Signed-off-by: Sean Anderson <redacted> --- drivers/net/ethernet/cadence/macb_main.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 029dea2873e3..30a65cac9e87 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c@@ -898,6 +898,17 @@ static int macb_mdiobus_register(struct macb *bp) { struct device_node *child, *np = bp->pdev->dev.of_node; + /* If we have a child named mdio, probe it instead of looking for PHYs + * directly under the MAC node + */ + child = of_get_child_by_name(np, "mdio"); + if (np) { + int ret = of_mdiobus_register(bp->mii_bus, child); + + of_node_put(child); + return ret; + } + if (of_phy_is_fixed_link(np)) return mdiobus_register(bp->mii_bus);
--
2.25.1