arc_mdio_write(9)

💖 arc_mdio_write(9) 💖

okay so this page is from the Kernel API Manual, and it's all about the MDIO interface write function bestie. no cap, it's giving "small function, very specific job" energy ✨

---

🌸 NAME 🌸

arc_mdio_write — the MDIO interface write function. periodt 💅

---

🦋 SYNOPSIS 🦋

int arc_mdio_write (struct mii_bus *bus , int phy_addr , int reg_num ,
       u16 value );

---

🎀 ARGUMENTS 🎀

• bus — pointer to the MII bus structure. literally the bus in question 🚌
• phy_addr — address of the PHY device. yep, that's the PHY's address 💌
• reg_num — the PHY register to write to. the exact register bestie, no guessing 🎯
• value — the value to be written into the register. this is the thing going in ✨

---

🌈 RETURN 🌈

It returns 0 on success, and -ETIMEDOUT on a timeout. that's the whole return vibe, fr fr 💀

---

👑 DESCRIPTION 👑

Writes the value to the requested register. like, that's it, that's the function — but make no mistake, it's doing its main character job 💅🔥

---

🧚 SEE ALSO 🧚

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

---

okay that's the whole page bestie 🫶 — source/version is ./drivers/net/ethernet/arc, dated October 2026, and this is arc_mdio_write(9) signing off. mwah 💋🎀