44 lines
1.3 KiB
Diff
44 lines
1.3 KiB
Diff
From 1d81e51d6d79d9098013b2e8cdd677bae998c5d8 Mon Sep 17 00:00:00 2001
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From: David Bauer <mail@david-bauer.net>
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Date: Fri, 28 Apr 2023 02:22:59 +0200
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Subject: [PATCH 1/2] mt7530: register OF node for internal MDIO bus
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The MT753x switches provide a switch-internal MDIO bus for the embedded
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PHYs.
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Register a OF sub-node on the switch OF-node for this internal MDIO bus.
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This allows to configure the embedded PHYs using device-tree.
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Signed-off-by: David Bauer <mail@david-bauer.net>
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---
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drivers/net/dsa/mt7530.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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--- a/drivers/net/dsa/mt7530.c
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+++ b/drivers/net/dsa/mt7530.c
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@@ -2142,10 +2142,13 @@ mt7530_setup_mdio(struct mt7530_priv *pr
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{
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struct dsa_switch *ds = priv->ds;
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struct device *dev = priv->dev;
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+ struct device_node *np, *mnp;
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struct mii_bus *bus;
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static int idx;
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int ret;
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+ np = priv->dev->of_node;
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+
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bus = devm_mdiobus_alloc(dev);
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if (!bus)
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return -ENOMEM;
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@@ -2162,7 +2165,9 @@ mt7530_setup_mdio(struct mt7530_priv *pr
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if (priv->irq)
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mt7530_setup_mdio_irq(priv);
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- ret = devm_mdiobus_register(dev, bus);
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+ mnp = of_get_child_by_name(np, "mdio");
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+ ret = devm_of_mdiobus_register(dev, bus, mnp);
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+ of_node_put(mnp);
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if (ret) {
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dev_err(dev, "failed to register MDIO bus: %d\n", ret);
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if (priv->irq)
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