STRUCT OMAP_SDRC_PARAMS(9)

💖 NAME 💖

struct omap_sdrc_params — literally the SDRC parameters for a given SDRC clock rate, no cap ✨

So this page lives in the Kernel API Manual, and it's about one little struct that holds all the pre-computed register vibes for your SDRC. Let's get into it 🫶

---

🌸 SYNOPSIS 🌸

struct omap_sdrc_params {
    unsigned long rate;
    u32 actim_ctrla;
    u32 actim_ctrlb;
    u32 rfr_ctrl;
    u32 mr;
 };

That's the whole thing bestie, five fields, iconic, minimal, periodt 💅

---

🎀 Members 🎀

• rate — the SDRC clock rate, in Hz. This is like the main character of the struct, everything else is keyed off it 💫
• actim_ctrla — the value you program into SDRC_ACTIM_CTRLA for this rate.
• actim_ctrlb — the value you program into SDRC_ACTIM_CTRLB for this rate.
• rfr_ctrl — the value you program into SDRC_RFR_CTRL for this rate.
• mr — the value you program into SDRC_MR for this rate.

---

🦋 Description 🦋

Okay so here's the tea 🔥 This structure holds a whole pre-computed set of register values for the SDRC — and it's for a given SDRC clock rate and SDRAM chip, both. Those values are intended to be pre-computed and specified in an array in the board-*.c files. And the whole struct is keyed off the rate field, so that's the lookup vibe iykyk.

Not me emphasizing this but fr fr: the values are intended to be pre-computed — that's the design, bestie 🌸

---

⭐ SEE ALSO ⭐

• Kernel file ./arch/arm/mach-omap2/sdrc.h — go read it, you'll slay 👑

---

Sign-off time 🎀 This lil page came from ./arch/arm/mach-omap2, dated October 2026, and it's the struct omap_sdrc_params(9) entry in the Kernel API Manual. Mwah, go program some registers 💜✨