STRUCT VID_DATA(9)

💜 struct vid_data(9) — the voltage data glow-up

okay bestie, so the page header says struct vid_data(9) and the manual name is Kernel API Manual — yes, the kernel API manual, we're in the big leagues now ✨

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🌸 NAME 🌸

struct vid_data — literally stores voltage information data, that's the whole vibe 🎀

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🦋 SYNOPSIS 🦋

struct vid_data {
    int min;
    int max;
    int turbo;
    int32_t ratio;
 };

no cap, that's the whole struct — four juicy little fields, icon energy 👑

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✨ Members ✨

• min — the VID data for this platform that corresponds to the lowest P state 🍓
• max — the VID data that corresponds to the highest P State 💅
• turbo — the VID data for the turbo P state 🔥
• ratio — the ratio of (vid max - vid min) / (max P state - Min P State), math queen behavior 🧚

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💖 Description 💖

so what is this even for? struct vid_data stores the voltage data for DVFS (Dynamic Voltage and Frequency Scaling) — yes, say it with your chest, DVFS 💀

this data gets used in Atom platforms, where — on top of the target P state — the voltage data also needs to be specified so the next P State can be selected. it's giving "extra step but make it necessary" 🙈

fr fr, that's not me adding lore, that's just what the page says — the voltage data is a required part of picking the next P State on those platforms 🫶

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/cpufreq/intel_pstate.c — go read the source, iykyk 👀
• struct sample(9)
• struct pstate_data(9)
• struct global_params(9)
• struct cpudata(9)
• struct pstate_funcs(9)

like, the whole intel_pstate.c friend group, honestly 💜

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and that's the page, bestie — slay, you now understand struct vid_data 💅

this one lives under ./drivers/cpufreq and the page is dated October 2026, so like… bookmark it, timestamp it, screenshot it, whatever you gotta do ⭐🎀