STRUCT SAMSUNG_CMU_INFO(9)

🌸 NAME 🌸

struct samsung_cmu_info(9) — okay so bestie, this is the Kernel API Manual page for the struct that carries all clocks information needed for CMU registration. No cap, it’s basically the group-chat roster for every clock type the CMU wants to register, plus all the counts, names, and offsets that make it happen. 💅✨

✨ SYNOPSIS ✨

struct samsung_cmu_info {
    const struct samsung_pll_clock *pll_clks;
    unsigned int nr_pll_clks;
    const struct samsung_mux_clock *mux_clks;
    unsigned int nr_mux_clks;
    const struct samsung_div_clock *div_clks;
    unsigned int nr_div_clks;
    const struct samsung_gate_clock *gate_clks;
    unsigned int nr_gate_clks;
    const struct samsung_fixed_rate_clock *fixed_clks;
    unsigned int nr_fixed_clks;
    const struct samsung_fixed_factor_clock *fixed_factor_clks;
    unsigned int nr_fixed_factor_clks;
    unsigned int nr_clk_ids;
    const struct samsung_cpu_clock *cpu_clks;
    unsigned int nr_cpu_clks;
    const unsigned long *clk_regs;
    unsigned int nr_clk_regs;
    const struct samsung_clk_reg_dump *suspend_regs;
    unsigned int nr_suspend_regs;
    const char *clk_name;
    const unsigned long *sysreg_clk_regs;
    unsigned int nr_sysreg_clk_regs;
    bool manual_plls;
    bool auto_clock_gate;
    u32 gate_dbg_offset;
    u32 option_offset;
    u32 drcg_offset;
    u32 memclk_offset;
};

💖 Members 💖

Okay so here’s the member-by-member vibe check — every field, every count, nothing skipped, periodt:

• pll_clks — list of PLL clocks. The PLL lineup. 🫶
• nr_pll_clks — count of clocks in pll_clks. Like, how many PLL babies we got.
• mux_clks — list of mux clocks. The mux crew.
• nr_mux_clks — count of clocks in mux_clks.
• div_clks — list of div clocks. Divas, literally.
• nr_div_clks — count of clocks in div_clks.
• gate_clks — list of gate clocks. Gate gang.
• nr_gate_clks — count of clocks in gate_clks.
• fixed_clks — list of fixed clocks. Fixed, not broken.
• nr_fixed_clks — count clocks in fixed_clks.
• fixed_factor_clks — list of fixed factor clocks. Fixed-factor besties.
• nr_fixed_factor_clks — count of clocks in fixed_factor_clks.
• nr_clk_ids — total number of clocks with IDs assigned. The ID headcount.
• cpu_clks — list of CPU clocks. CPU clock royalty.
• nr_cpu_clks — count of clocks in cpu_clks.
• clk_regs — list of clock registers.
• nr_clk_regs — count of clock registers in clk_regs.
• suspend_regs — list of clock registers to set before suspend. Pre-suspend checklist energy.
• nr_suspend_regs — count of clock registers in suspend_regs.
• clk_name — name of the parent clock needed for CMU register access. Yes, parent clock. Very important. 👑
• sysreg_clk_regs — list of sysreg clock registers.
• nr_sysreg_clk_regs — count of clock registers in sysreg_clk_regs.
• manual_plls — Enable manual control for PLL clocks.
• auto_clock_gate — enable auto clock mode for all components in CMU.
• gate_dbg_offset — gate debug reg offset. Used by all gates in auto clk mode.
• option_offset — option reg offset. Enables auto clk mode for entire CMU.
• drcg_offset — dynamic root clk gate enable register offset in sysreg.
• memclk_offset — memclk enable register offset in sysreg.

🦋 SEE ALSO 🦋

Kernel file ./drivers/clk/samsung/clk.h has the lore, bestie. Go read these cuties:

• struct samsung_clk_provider(9)
• struct samsung_clock_alias(9)
• struct samsung_fixed_rate_clock(9)
• struct samsung_fixed_factor_clock(9)
• struct samsung_mux_clock(9)
• struct samsung_div_clock(9)
• struct samsung_gate_clock(9)
• struct samsung_clk_reg_dump(9)
• struct samsung_pll_clock(9)

Source/version: ./drivers/clk/samsung · Kernel API Manual · October 2026 · struct samsung_cmu_info(9). Bye bestie, go register those clocks 💅🎀✨