mdiobus_scan_c22(9)

💖 NAME 💖

mdiobus_scan_c22 — scan one address on a bus for C22 MDIO devices. periodt 💅

okay bestie, this is the Kernel API Manual page for mdiobus_scan_c22(9), and it’s giving “check one tiny spot on the bus” energy 🦋

✨ SYNOPSIS ✨

struct phy_device * mdiobus_scan_c22 (struct mii_bus *bus , int addr );

🫶 ARGUMENTS 🫶

• bus — the mii_bus to scan.
• addr — the address on bus to scan.

🌸 DESCRIPTION 🌸

So this function scans one address on the MDIO bus, looking for devices that can be identified using a vendor/product ID in registers 2 and 3. That’s the hunt: one address, registers 2 and 3, vendor/product ID vibes 🔍✨

Not all MDIO devices have such registers, bestie — but PHY devices typically do. Hence this function assumes anything found is a PHY, or can be treated as a PHY. It’s giving “if it shows up, treat it like a PHY” energy 🌈

Other MDIO devices, such as switches, will probably not be found during the scan. Not a guarantee, just the vibe: don’t expect the switch squad here 💀

🎀 SEE ALSO 🎀

• Kernel file: ./drivers/net/phy/mdio_bus_provider.c
• mdiobus_release(9)
• mdio_bus_match(9)
• mdiobus_alloc_size(9)
• mdiobus_scan_c45(9)
• __mdiobus_register(9)
• mdiobus_free(9)
• mdio_find_bus(9)
• of_mdio_find_bus(9)

source/version: ./drivers/net/phy · date: October 2026 · page: mdiobus_scan_c22(9) — byeee bestie, go scan responsibly 🫶💖