STRUCT SCPSYS_DOMAIN_DATA(9)

💅 struct scpsys_domain_data(9) — a whole vibe

okay so this is from the Kernel API Manual, and bestie, it's the struct scpsys_domain_data — literally the scp domain data for the power on/off flow 👑. Like, every power domain gets one of these little babies and it holds everything the driver needs to know about turning it on and off. no cap.

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✨ NAME ✨

struct scpsys_domain_data — scp domain data for power on/off flow 🫶

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🌸 SYNOPSIS 🌸

struct scpsys_domain_data {
    const char *name;
    u32 sta_mask;
    u32 sta2nd_mask;
    int ctl_offs;
    u32 sram_pdn_bits;
    u32 sram_pdn_ack_bits;
    int ext_buck_iso_offs;
    u32 ext_buck_iso_mask;
    u16 caps;
    enum scpsys_rtff_type rtff_type;
    const struct scpsys_bus_prot_data bp_cfg[SPM_MAX_BUS_PROT_DATA];
    int pwr_sta_offs;
    int pwr_sta2nd_offs;
 };

like, that's the whole struct, exactly as it is, don't @ me 💖

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🎀 Members 🎀

• name — the name of the power domain. its whole identity, its main character energy ⭐
• sta_mask — the mask for power on/off status bit 🔥
• sta2nd_mask — the mask for second power on/off status bit. yes there's a second one, she's got layers 💅
• ctl_offs — the offset for main power control register 🌸
• sram_pdn_bits — the mask for sram power control bits 🦋
• sram_pdn_ack_bits — the mask for sram power control acked bits. ack bits are the way that the hardware says "heard u bestie" 😭
• ext_buck_iso_offs — the offset for external buck isolation ✨
• ext_buck_iso_mask — the mask for external buck isolation 🧚
• caps — the flag for active wake-up action 🌈
• rtff_type — the power domain RTFF HW type. which kind of RTFF hardware, iykyk 👑
• bp_cfg — bus protection configuration for any subsystem 🫶

fr fr, don't skip a single field, they all matter when the power's getting yanked around 💀

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/pmdomain/mediatek/mtk-pm-domains.h enum scpsys_rtff_type(9)
• enum scpsys_mtcmos_type(9)
• struct scpsys_hwv_domain_data(9)

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okay that's the whole thing, go read the kernel file if u want more lore 📖💜

— sourced from ./drivers/pmdomain/mediatek, dated October 2026, and that's the tea 🍓💅 slay bestie, go turn some power domains on and off responsibly ✨🎀