fsl_guts_lane_validate(9)

💅 fsl_guts_lane_validate — a Kernel API Manual moment

okay so bestie, welcome to fsl_guts_lane_validate(9) from the Kernel API Manual — yes it's a section 9 page, yes it's a function, yes we're gonna stan it 🎀

It's the vibe-check function: it validates that a SerDes protocol is actually implemented and supported on the current SoC. No cap. ✨

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✨ SYNOPSIS ✨

int fsl_guts_lane_validate (int serdes_idx , int lane , enum
       lynx_lane_mode lane_mode );

literally just three args and an int back. iconic. 🫶

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🌸 ARGUMENTS 🌸

• serdes_idx — the SerDes block index, and it's one-based (so like, counting starts at 1, not 0 — she's quirky like that 🙈)
• lane — the lane index within that SerDes, and this one is zero-based (back to normal counting, thank god 😭)
• lane_mode — the SerDes protocol you're asking for, typed as enum lynx_lane_mode

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🦋 DESCRIPTION 🦋

The whole point: call this before you actually request the RCW override procedure to be applied via fsl_guts_lane_set_mode. Like, check first, then commit. main character energy only. 💅

not me emphasizing this: validate first, override second. the order matters fr fr.

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⭐ RETURN ⭐

• 0 — the RCW override to that protocol is possible, slay ✅
• negative error — nope, not possible, and it comes back as a negative error value 💀

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/soc/fsl/guts.c
• fsl_guts_lane_set_mode(9) — the bestie this one's paired with 🫶

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aaaand that's the page! 🧚 source lives in ./drivers/soc/fsl, dated October 2026, and it's fsl_guts_lane_validate(9) all the way down — periodt. 💖🌈👑