__of_mdiobus_register(9)

💅 __of_mdiobus_register(9) — the Kernel API Manual, bestie edition 🦋

okay so this is a page straight out of the Kernel API Manual and honestly? it's a little gem. it's the low-level, double-underscore version of registering an MDIO bus and letting the device tree do its thing. iykyk 💖

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✨ SYNOPSIS ✨

int __of_mdiobus_register (struct mii_bus *mdio , struct device_node *np
, struct module *owner );

three args, one int back, no drama. periodt. 🎀

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🌸 ARGUMENTS 🌸

• mdio — pointer to the mii_bus structure. this is the bus we're about to make official, bestie 💅
• np — pointer to the device_node of the MDIO bus. this is the device-tree node whose children get to become PHYs ✨
• owner — the module that owns the mdio object. gotta keep the refcount people happy 🫶

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👑 DESCRIPTION 👑

so what does it actually do? two things, and it ate:

1. it registers the mii_bus structure 📝
2. it registers a phy_device for each child node of np 🌈

that's it. that's the function. main character energy, minimal dialogue 🔥

ngl, this is the internal one (look at those leading underscores) — the device tree is doing the heavy lifting here, walking every child of np and turning them into PHYs for you. no cap.

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🔍 SEE ALSO 🔍

• Kernel file ./drivers/net/mdio/of_mdio.c
• of_mdio_find_device(9)
• of_phy_find_device(9)
• of_phy_connect(9)
• of_phy_get_and_connect(9)

go read ./drivers/net/mdio/of_mdio.c if you wanna see the whole vibe in context, fr fr 📚💜

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and that's the page!! 🧚 from the ./drivers/net/mdio source, dated October 2026, signed off as __of_mdiobus_register(9) — slay, go register some PHYs bestie 💅✨🍓