1 From 1d81e51d6d79d9098013b2e8cdd677bae998c5d8 Mon Sep 17 00:00:00 2001
2 From: David Bauer <mail@david-bauer.net>
3 Date: Fri, 28 Apr 2023 02:22:59 +0200
4 Subject: [PATCH 1/2] mt7530: register OF node for internal MDIO bus
6 The MT753x switches provide a switch-internal MDIO bus for the embedded
9 Register a OF sub-node on the switch OF-node for this internal MDIO bus.
10 This allows to configure the embedded PHYs using device-tree.
12 Signed-off-by: David Bauer <mail@david-bauer.net>
14 drivers/net/dsa/mt7530.c | 7 ++++++-
15 1 file changed, 6 insertions(+), 1 deletion(-)
17 --- a/drivers/net/dsa/mt7530.c
18 +++ b/drivers/net/dsa/mt7530.c
19 @@ -2142,10 +2142,13 @@ mt7530_setup_mdio(struct mt7530_priv *pr
21 struct dsa_switch *ds = priv->ds;
22 struct device *dev = priv->dev;
23 + struct device_node *np, *mnp;
28 + np = priv->dev->of_node;
30 bus = devm_mdiobus_alloc(dev);
33 @@ -2162,7 +2165,9 @@ mt7530_setup_mdio(struct mt7530_priv *pr
35 mt7530_setup_mdio_irq(priv);
37 - ret = devm_mdiobus_register(dev, bus);
38 + mnp = of_get_child_by_name(np, "mdio");
39 + ret = devm_of_mdiobus_register(dev, bus, mnp);
42 dev_err(dev, "failed to register MDIO bus: %d\n", ret);