From 1d81e51d6d79d9098013b2e8cdd677bae998c5d8 Mon Sep 17 00:00:00 2001 From: David Bauer Date: Fri, 28 Apr 2023 02:22:59 +0200 Subject: [PATCH 1/2] mt7530: register OF node for internal MDIO bus The MT753x switches provide a switch-internal MDIO bus for the embedded PHYs. Register a OF sub-node on the switch OF-node for this internal MDIO bus. This allows to configure the embedded PHYs using device-tree. Signed-off-by: David Bauer --- drivers/net/dsa/mt7530.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -2192,10 +2192,13 @@ mt7530_setup_mdio(struct mt7530_priv *pr { struct dsa_switch *ds = priv->ds; struct device *dev = priv->dev; + struct device_node *np, *mnp; struct mii_bus *bus; static int idx; int ret; + np = priv->dev->of_node; + bus = devm_mdiobus_alloc(dev); if (!bus) return -ENOMEM; @@ -2214,7 +2217,9 @@ mt7530_setup_mdio(struct mt7530_priv *pr if (priv->irq) mt7530_setup_mdio_irq(priv); - ret = devm_mdiobus_register(dev, bus); + mnp = of_get_child_by_name(np, "mdio"); + ret = devm_of_mdiobus_register(dev, bus, mnp); + of_node_put(mnp); if (ret) { dev_err(dev, "failed to register MDIO bus: %d\n", ret); if (priv->irq)