dwmac_ctrl_ane(9)

💅 dwmac_ctrl_ane — bestie's guide to the Kernel API Manual

okay so first things first, the manual name is Kernel API Manual, and the page is called dwmac_ctrl_ane(9). yes the (9) is part of the name, it's giving kernel-section energy, we respect it 💖

✨ NAME ✨

dwmac_ctrl_ane — literally the function you call to program the AN Control Register. that's it, that's the whole job 🎀

✨ SYNOPSIS ✨

void dwmac_ctrl_ane (void __iomem *ioaddr , u32 reg , bool ane , bool
srgmi_ral );

no cap, that's the signature exactly as written, spaces and all. copy it character for character, bestie 🫶

✨ ARGUMENTS ✨

• ioaddr — the IO registers pointer. yes babe, it's a void __iomem *, we're doing memory-mapped IO, stay hydrated 💧
• reg — a u32 holding the base address of the AN Control Register. this is where the magic gets written 🪄
• ane — a bool, and it's the one that enables auto-negotiation. turn it on, it's iconic ✨
• srgmi_ral — another bool, this one is here to manage MAC-2-MAC SGMII connections. very specific, very main character 🔥

✨ DESCRIPTION ✨

so this is the main function for configuring the AN control register. like, the whole vibe. it inits the ANE, it selects loopback (usually for debugging purposes, iykyk 🐛), and it configures SGMII RAL.

three jobs, one function, and it ate. periodt 💅

ngl it's the main function — if you're looking for the side-quest version of this, keep scrolling, this is not it 👑

✨ SEE ALSO ✨

• ./drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h — the kernel file to go peek at if you want the full lore 🦋

and that's the whole page, no notes 🌸 this was dwmac_ctrl_ane(9) from the Kernel API Manual, with the source/version line ./drivers/net/ethernet/stmicro... and the date October 2026 — mwah, go slay some auto-negotiation 💖🎀🫶