STRUCT PSE_PI(9)

💖 struct pse_pi(9) 💖

okay bestie, so this is the struct pse_pi(9) page from the Kernel API Manual — it's giving very much "electrical engineering but make it fashion" ✨. Buckle up, we're talking about the PSE PI entity, no cap.

✨ NAME ✨

struct pse_pi — the PSE PI (Power Interface) entity, exactly as described in IEEE 802.3-2022 145.2.4. That's the spec, bestie, we don't make the rules 🌸

🎀 SYNOPSIS 🎀

struct pse_pi {
    struct pse_pi_pairset pairset[2];
    struct device_node *np;
    struct regulator_dev *rdev;
    bool admin_state_enabled;
    struct pse_power_domain *pw_d;
    int prio;
    bool isr_pd_detected;
    int pw_allocated_mW;
};

literally the whole struct, laid out, iconic 💅

🦋 Members 🦋

• pairset — the table of PSE PI pinout alternatives for the two pairset. yep, two of them, it's a whole thing 🔥
• np — the device node pointer for the PSE PI node. it's the "where am i" of the whole vibe 💜
• rdev — the regulator that this PSE PI represents 🎀
• admin_state_enabled — the PI enabled state. is it on? is it off? this bool knows 👑
• pw_d — the Power domain of the PSE PI ⚡
• prio — the Priority of the PSE PI. it gets used in the static budget evaluation strategy, so it's not just decorative, it matters 🫶
• isr_pd_detected — the PSE PI detection status, and it's managed by the interruption handler. > heads up: this variable is only relevant when the power enabled management is managed in software — like the static budget evaluation strategy. so if that's not your situation, this one's just sitting there 💀
• pw_allocated_mW — the Power allocated to a PSE PI, used to manage the power budget in the static budget evaluation strategy 📊

🌈 SEE ALSO 🌈

go read these too, i promise they're all connected, iykyk:

• Kernel file ./include/linux/pse-pd/pse.h
• struct pse_irq_desc(9)
• struct pse_control_config(9)
• struct pse_admin_state(9)
• struct pse_pw_status(9)
• struct pse_ext_state_info(9)
• struct pse_pw_limit_ranges(9)
• struct ethtool_pse_control_status(9)
• struct pse_controller_ops(9)
• struct pse_pi_pairset(9)
• struct pse_ntf(9)
• struct pse_controller_dev(9)
• enum pse_budget_eval_strategies(9)

so that's the whole page, muah 💋 — it lives at ./include/linux/pse-pd, dated October 2026, and it's signed off as struct pse_pi(9). slay, go read the kernel now, bestie 🌸💖