stmmac_mdio_format_addr(9)

💅 stmmac_mdio_format_addr(9)

okay so bestie, this is a page straight out of the Kernel API Manual — like, kernel-doc but make it cute ✨ it's stmmac_mdio_format_addr, and it does exactly one lil job, but it does it flawlessly. no cap.

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🌸 NAME 🌸

stmmac_mdio_format_addr — format the address register. that's it. that's the whole vibe. she formats, she slays, she goes home 🎀

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🦋 SYNOPSIS 🦋

u32 stmmac_mdio_format_addr (struct stmmac_priv *priv , unsigned int pa
, unsigned int gr );

so you hand her three things and she hands you back a u32. main character energy fr fr 👑

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💖 ARGUMENTS 💖

• priv — a struct stmmac_priv pointer. the whole private context situation, she needs it, don't ask questions 🫶
• pa — the 5-bit MDIO package address. yes, 5-bit. she's precise like that ✨
• gr — the 5-bit MDIO register address when you're in C22 mode, or the MDIO device address when you're in C45 mode. lowkey context-dependent, iykyk 💅

side note bestie: those 5-bit limits are literally in the original, so don't be out here passing her a 9-bit situation and expecting a happy ending 😭

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⭐ RETURN ⭐

the formatted address register. that's what comes back. a u32 of pure formatted-address goodness 🌈

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👑 SEE ALSO 👑

• Kernel file: ./drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c — the homeland, go visit her 💜
• stmmac_mdio_read_c22(9)
• stmmac_mdio_read_c45(9)
• stmmac_mdio_write_c22(9)
• stmmac_mdio_write_c45(9)
• stmmac_mdio_reset(9)
• stmmac_clk_csr_set(9)
• stmmac_mdio_register(9)
• stmmac_mdio_unregister(9)

like a whole friend group of MDIO functions and she's the one who formats the address for all of them. obsessed 🧚

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okay bye bestie, this page came from ./drivers/net/ethernet/stmicro/... (the stmmac_mdio.c file up there, you already know), October 2026 edition, served fresh in the Kernel API Manual 🍓💀✨ periodt.