STRUCT DPLL_INFO(9)

💅 struct dpll_info(9) 💅

okay so bestie, welcome to the Kernel API Manual — yes that manual — and today's main character is struct dpll_info. it's the little struct that shows off PLL platform specific info, and honestly? it's giving backstage-pass energy. let's get into it 🎀

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✨ NAME ✨

struct dpll_info — display PLL platform specific info. that's it, that's the vibe 🦋

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🌸 SYNOPSIS 🌸

struct dpll_info {
    const char *name;
    const struct intel_dpll_funcs *funcs;
    enum intel_dpll_id id;
    enum intel_display_power_domain power_domain;
    bool always_on;
    bool is_alt_port_dpll;
 };

look at her. six fields. flawless. no notes 💖

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👑 Members 👑

• name — the DPLL name, and it's literally just here for logging. she's famous for the vibes, not for the heavy lifting 🫶
• funcs — the platform specific hooks. this is where the platform goes "i do it my way" 💅
• id — a unique identifier for this DPLL. no two DPLLs share one, periodt ⭐
• power_domain — the extra power domain that this DPLL needs. extra, as in bonus, as in she requires more than base level 👑
• always_on — this one's for the state checker: it tells it that the DPLL is kept enabled even if not in use by any CRTC. so like… she's awake even when nobody's calling her 😭
• is_alt_port_dpll — also for the state checker, and it says this DPLL can be used as a fallback (for TC->TBT fallback). backup bestie rights! 🌈

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/i915/display/intel_dpll_mgr.h enum intel_dpll_id(9), struct intel_dpll_state(9), struct intel_dpll(9)

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ngl bestie, the state checker bits (always_on and is_alt_port_dpll) are literally just informing it — don't go thinking they toggle anything themselves, iykyk 🙈

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okay that's the whole page, you ate that 💜 and for the cute little sign-off: this lived in ./drivers/gpu/drm/i915/display, dated October 2026, and it's struct dpll_info(9) forever and always 💖✨🎀