stmmac_mdio_write_c45(9)

🦋 stmmac_mdio_write_c45(9) 🦋

okay so this little icon is straight out of the Kernel API Manual, and we're gonna go through it together, bestie. 💖

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✨ NAME ✨

stmmac_mdio_write_c45 —

yep, that's the whole name line. the original doesn't give a one-liner after the dash, and we're not out here inventing lore. 🙈

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🌸 SYNOPSIS 🌸

here's the signature, copied exactly because we do not play with code:

int stmmac_mdio_write_c45 (struct mii_bus *bus , int phyaddr , int devad
, int phyreg , u16 phydata );

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🎀 ARGUMENTS 🎀

the deets, one by one:

• bus — points to the mii_bus structure. 🫶
• phyaddr — MII addr.
• devad — device address to read.
• phyreg — MII reg.
• phydata — phy data.

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💅 DESCRIPTION 💅

okay so the actual description is short and sweet: it writes the data into the MII register from within the device. that's it, that's the whole thing. no cap. 💅

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🔥 SEE ALSO 🔥

Kernel file: ./drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c

and these besties:

• stmmac_mdio_format_addr(9)
• stmmac_mdio_read_c22(9)
• stmmac_mdio_read_c45(9)
• stmmac_mdio_write_c22(9)
• stmmac_mdio_reset(9)
• stmmac_clk_csr_set(9)
• stmmac_mdio_register(9)
• stmmac_mdio_unregister(9)

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mwah 💋 this page comes from the Kernel API Manual, with source/version ./drivers/net/ethernet/stmicro... and the date October 2026. stmmac_mdio_write_c45(9) out. 🎀