omap_cm_module_disable(9)

💅 omap_cm_module_disable(9) — Kernel API Manual 🎀

okay so bestie, welcome to the omap_cm_module_disable page from the Kernel API Manual ✨ this is the one that turns a module off, and honestly it's giving "lights out, everyone go home" energy 🦋

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✨ NAME ✨

omap_cm_module_disable — disable a module 💤

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🌸 SYNOPSIS 🌸

int omap_cm_module_disable (u8 part , u16 inst , u16 clkctrl_offs );

like... three args, one int back, no cap 🫶

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🎀 ARGUMENTS 🎀

• part — the PRCM partition 💜 that's the u8 one
• inst — the PRCM instance 🧚 that's the u16
• clkctrl_offs — the CM_CLKCTRL register offset for the module 👑 this is where the module actually lives in register-land

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🔥 DESCRIPTION 🔥

So what it does is: it disables clocks for a module identified by (part, inst, clkctrl_offs), which makes its IO space inaccessible 😭 like the door's locked and the lights are off, the module is not taking visitors.

Return values, fr fr:

• returns 0 upon success ⭐ slay
• returns -EINVAL if no per-SoC module_disable function pointer has been registered 💀 like nobody signed up to do the job, so the call bounces

lowkey important: this isn't just "pause the clock", it's "IO space inaccessible" — so don't go poking at that module's registers after this, bestie 🙈

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🦋 SEE ALSO 🦋

Kernel file ./arch/arm/mach-omap2/cm_common.c, plus the whole friend group 💖

• cm_split_idlest_reg(9)
• omap_cm_wait_module_ready(9)
• omap_cm_wait_module_idle(9)
• omap_cm_module_enable(9)
• cm_register(9)
• cm_unregister(9)
• omap2_cm_base_init(9)
• omap_cm_init(9)

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and that's the page, periodt 💅 this little gem lives over in ./arch/arm/mach-omap2 and the docs are dated October 2026 — catch you in the next man page, mwah 🍓💜