igc_power_up_phy_copper(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 igc_power_up_phy_copper — the glow-up page 🌸

okay so bestie, welcome to the Kernel API Manual entry for igc_power_up_phy_copper(9) — yes that's the whole name, she's long, she's iconic, we love her 💅

✨ NAME ✨

igc_power_up_phy_copper — the function that restores the copper link when the PHY got powered down. basically the "you can come back now" text to your network hardware 🫶

✨ SYNOPSIS ✨

void igc_power_up_phy_copper (struct igc_hw *hw );

no cap, that's the whole signature. it returns void (nothing), it takes one pointer, and it's gonna fix your link. periodt.

✨ ARGUMENTS ✨

  • hw — pointer to the HW structure. that's it, that's the whole arg list. she only needs one thing and she's ready 🎀

✨ DESCRIPTION ✨

so here's the vibe 😭 — sometimes your PHY gets powered down, right? could be to save power, or to turn off the link during a driver unload. totally valid, very main character of it to nap like that 💤

but then you need it back!! and that's exactly what this function does: it restores the link to previous settings. not new settings, not invented settings — the previous ones. she remembers what you had going on and she puts it back, no drama, no notes ✨

lowkey important: the point here is that the link comes back exactly how it was configured before the power-down. it's a restore, not a fresh setup 🔥

✨ SEE ALSO ✨

the whole friend group, fr fr 👑 — go look at the kernel file ./drivers/net/ethernet/intel/igc/igc_phy.c and also:

like, that's the entire group chat and every single one of them ate 💖

🦋 sign-off 🦋

this little beauty lives in ./drivers/net/ethernet/intel/igc (the intel igc corner of the kernel, ily 🌈), and the page is dated October 2026. mwah, go restore that link bestie, you got this 💜✨

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