ice_get_serd...ef_sel_e825c(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ice_get_serdes_ref_sel_e825c — bestie edition ✨

okay so first things first, this page lives in the Kernel API Manual (section 9, kernel-land, very "i'm in the source tree" of it) and the whole vibe is: read the current Tx reference clock source. that's it, that's the function 🎀 it's a little helper in the Intel ice driver's PTP hardware code, and honestly it's giving "small but crucial" energy.

✨ NAME ✨

ice_get_serdes_ref_sel_e825c — read current Tx ref clock source, no cap 💖

like literally, that's what it does. you hand it a port, it goes and asks the PHY what the Tx reference clock situation is, and it writes the answer back into your clk pointer. main character behavior imo 👑

🌸 SYNOPSIS 🌸

int ice_get_serdes_ref_sel_e825c (struct ice_hw *hw , u8 port , enum
       ice_e825c_ref_clk *clk );

so yeah, int in, int out. it takes three things and it gives you back an int (which, spoiler, is 0 when everything slays 🫶). the formatting is weirdly wrapped there but that's just the manpage doing manpage things, don't @ me.

🦋 ARGUMENTS 🦋

  • hw — pointer to the struct ice_hw. it's THE hardware struct, the whole personality of the device lives in there. you need it, no negotiating 💅
  • port — the port number whose Tx reference clock you're reading. it's a u8, so keep it smol and valid. this is the port. yes, specifically that one. you gotta tell it which port.
  • clk — output param of type enum ice_e825c_ref_clk *. this is where the Tx reference clock value gets dropped off. it's an output, so like… it's the whole point? you're not passing a value in, you're getting one back ✨

⭐ RETURN ⭐

0 on success 🎉 — that's the good ending, the "everything worked, go take a selfie" ending.

other error codes when it fails to read from the PHY 😭 — so like, if the PHY is being uncooperative or the read just doesn't happen, you get something that isn't 0, and that's your sign that the vibe check failed. always check the return value bestie, fr fr.

💜 SEE ALSO 💜

okay this list is genuinely enormous and i need you to know that i am NOT skipping a single one of these. every single cross-reference is staying. this is the entire ice PTP extended family and they're all showing up to the group chat 📱💖

also, the kernel file itself lives at ./drivers/net/ethernet/intel/ice/ice_ptp_hw.c in case you wanna go read the actual source like a true scholar 🧚

🎀 the cute lil sign-off 🎀

this page came from ./drivers/net/ethernet/intel/ice (the driver directory, you know the one 🧚), dated October 2026, and it's filed under ice_get_serd...ef_sel_e825c(9) — yes the title got truncated with ... in the header and footer both, that's just how it is, it's giving "long function name problems" 💀 but she's iconic anyway.

go read the source, check your return codes, and stay hydrated bestie 💖✨🌸🦋🫶

📦 where this page comes from