arc_mdio_read(9)

💅 arc_mdio_read — MDIO interface read function ✨

Okay bestie, welcome to arc_mdio_read(9) from the Kernel API Manual — yes, the kernel API manual, we're literally in the big leagues now 🎀 This is the little function that goes and fetches a register value off a PHY for you, and honestly? It's giving "quiet hero of the Ethernet stack" energy. 🌈

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🌸 SYNOPSIS 🌸

int arc_mdio_read (struct mii_bus *bus , int phy_addr , int reg_num );

Three args, one int back. That's the whole vibe check. 🦋

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🫶 ARGUMENTS 🫶

• bus — Pointer to the MII bus structure. Like, this is the bus you're talking over, bestie. 🚌
• phy_addr — Address of the PHY device. Gotta know who you're talking to, obviously. 📍
• reg_num — The PHY register you wanna read. Pick your register, queen. 👑

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✨ RETURN ✨

• The register contents on success — slay, you got your data 💖
• -ETIMEDOUT on a timeout — so if it ghosts you, that's the error you get 😭💀

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💅 DESCRIPTION 💅

Reads the contents of the requested register from the requested PHY address. That's it. That's the whole thing. It's lowkey simple and highkey essential — you hand it a bus, a PHY address, and a register number, and it comes back with the register contents. Periodt. 🔥

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/net/ethernet/arc/emac_mdio.c 👀
• arc_mdio_complete_wait(9)
• arc_mdio_write(9)
• arc_mdio_reset(9)
• arc_mdio_probe(9)
• arc_mdio_remove(9)

The whole friend group, fr fr — go read the rest of them. 💜

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So yeah, that's arc_mdio_read(9), brought to you by ./drivers/net/ethernet/arc, dated October 2026. Go read a register, bestie — you've got this. 🍓✨