STRUCT CLK_ALPHA_PLL(9)

💅 NAME 💅

struct clk_alpha_pll — a phase locked loop (PLL) 🌀 and honestly? main character energy. This is the Kernel API Manual, bestie, so we're doing this properly but cute.

✨ SYNOPSIS ✨

okay so here's the entire struct, copied exactly because we do not play with code, no cap:

       struct clk_alpha_pll {
           u32 offset;
           const u8 *regs;
           const struct alpha_pll_config *config;
           const struct pll_vco *vco_table;
           size_t num_vco;
         #define SUPPORTS_OFFLINE_REQ            BIT(0);
         #define SUPPORTS_FSM_MODE               BIT(2);
         #define SUPPORTS_DYNAMIC_UPDATE BIT(3);
         #define SUPPORTS_FSM_LEGACY_MODE        BIT(4);
           u8 flags;
           struct clk_regmap clkr;
        };

🎀 Members 🎀

roll call time, let's meet the whole squad:

• offset — base address of registers, aka where this PLL's register situation begins. home address vibes 🏠.
• regs — the alpha pll register map, and yes it's literally pointing you to clk_alpha_pll_regs for the full lore 👀.
• config — array of pll settings. the preset menu, if you will 🍓.
• vco_table — array of VCO settings. another table, another vibe 🌸.
• num_vco — number of VCO settings in vco_table. literally the count, that's it, that's the whole job 🔢.
• flags — bitmask to indicate features supported by the hardware. the hardware's way of saying "here's what I can do" 💅. the bits are SUPPORTS_OFFLINE_REQ = BIT(0), SUPPORTS_FSM_MODE = BIT(2), SUPPORTS_DYNAMIC_UPDATE = BIT(3), and SUPPORTS_FSM_LEGACY_MODE = BIT(4). (no BIT(1) in the roster, don't come for me, that's just what the struct says.)
• clkr — regmap clock handle. the actual handle for the regmap clock situation 🎀.

🦋 SEE ALSO 🦋

go peek at these if you're obsessed like me:

• Kernel file ./drivers/clk/qcom/clk-alpha-pll.h — the source file, iykyk.
• struct clk_alpha_pll_postdiv(9) — the postdiv struct, highly recommend for the full picture 💜.

and that's the page, bestie. source/version: ./drivers/clk/qcom; date: October 2026; manual: struct clk_alpha_pll(9). periodt 💅✨🫶