STRUCT SDHCI_ARASAN_DATA(9)

📦 version 7.3.1, in nixpkgs unstable

✨ NAME ✨

Bestie, meet struct sdhci_arasan_data — the Arasan Controller Data struct from the Kernel API Manual. This is page struct sdhci_arasan_data(9), and it's literally giving “controller data but make it iconic.” 🫶💅

💅 SYNOPSIS 💅

Here's the whole struct, copied exactly because we do not mess with code, bestie:

struct sdhci_arasan_data {
    struct sdhci_host *host;
    struct clk      *clk_ahb;
    struct phy      *phy;
    bool is_phy_on;
    bool internal_phy_reg;
    bool has_cqe;
    struct sdhci_arasan_clk_data clk_data;
    const struct sdhci_arasan_clk_ops *clk_ops;
    struct regmap   *soc_ctl_base;
    const struct sdhci_arasan_soc_ctl_map *soc_ctl_map;
    unsigned int    quirks;
  #define SDHCI_ARASAN_QUIRK_FORCE_CDTEST BIT(0);
  #define SDHCI_ARASAN_QUIRK_CLOCK_UNSTABLE BIT(1);
  #define SDHCI_ARASAN_QUIRK_CLOCK_25_BROKEN BIT(2);
  #define SDHCI_ARASAN_QUIRK_ENSURE_CD_STABLE     BIT(3);
};

🫶 MEMBERS 🫶

  • host — Pointer to the main SDHCI host structure. The big boss pointer, fr fr. 👑
  • clk_ahb — Pointer to the AHB clock. Yes bestie, it's a clock pointer. ⏰
  • phy — Pointer to the generic phy. PHY said hi. 🧚
  • is_phy_on — True if the PHY is on; false if not. Literally a bool doing bool things. ✅
  • internal_phy_reg — True if the PHY is within the Host controller. It's internal, iykyk. 🫣
  • has_cqe — True if controller has command queuing engine. Queue it up, queen. 👑
  • clk_data — Struct for the Arasan Controller Clock Data. Clock data core. ⏱️
  • clk_ops — Struct for the Arasan Controller Clock Operations. The ops are ops-ing. 💅
  • soc_ctl_base — Pointer to regmap for syscon for soc_ctl registers. Regmap pointer supreme. 🗺️
  • soc_ctl_map — Map to get offsets into soc_ctl registers. Offsets? Mapped. 📍
  • quirks — Arasan deviations from spec. The spicy deviations. 🌶️

🌈 SEE ALSO 🌈

Bestie, if you wanna keep reading, the lore continues in the kernel file ./drivers/mmc/host/sdhci-of-arasan.c struct and these encore pages:

Source/version vibes: ./drivers/mmc/host · date: October 2026 · page: struct sdhci_arasan_data(9) — that's the whole footer, bestie, slay and bye! 💖✨

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