STRUCT XI3C_MASTER(9)

💖 struct xi3c_master(9) — Kernel API Manual 💖

okay bestie, welcome to the struct xi3c_master(9) page — this is literally the state of an I3C master controller, and we're gonna read it together like a group chat. no cap, every field matters. 🫶

🌈 NAME 🌈

struct xi3c_master — I3C master controller state.

✨ SYNOPSIS ✨

here's the struct in all its iconic glory:

struct xi3c_master {
    struct i3c_master_controller base;
    struct device *dev;
    void __iomem *membase;
    struct clk *pclk;
    struct mutex lock;
    struct {
      u8 addrs[XI3C_MAX_DEVS];
      u8 index;
    } daa;
 };

🎀 Members 🎀

• base — I3C master controller embedded by the framework. it's giving main character energy inside the framework 💅
• dev — Pointer to the backing device structure.
• membase — Memory base of the HW registers.
• pclk — Input clock driving the controller.
• lock — Serializes transfers and CCC submission.
• daa — ENTDAA enumeration state. enumeration era ✨
• daa.addrs — Dynamic addresses assigned in enumeration order.
• daa.index — Number of responders enumerated so far.

🦋 SEE ALSO 🦋

Kernel file ./drivers/i3c/master/amd-i3c-master.c — go read it, bestie, it's right there 👑

source/version check: this page comes from ./drivers/i3c/master, dated October 2026 — byeee, slay responsibly 💖🎀