omap4_enter_lowpower(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 NAME 🌸

okay bestie, this is omap4_enter_lowpower(9), fresh out of the Kernel API Manual 💖 — the OMAP4 MPUSS Low Power Entry Function. Its whole purpose? To manage low power programming of the OMAP4 MPUSS subsystem. That's the vibe. ✨

✨ SYNOPSIS ✨

__cpuidle int omap4_enter_lowpower (unsigned int cpu , unsigned int power_state , bool rcuidle );

🎀 ARGUMENTS 🎀

  • cpu — CPU ID 🫶
  • power_state — Low power state 🌙
  • rcuidle — RCU needs to be idled 😴

🦋 DESCRIPTION 🦋

MPUSS states for the context save, bestie — here's the breakdown:

  • save_state = 0 — Nothing lost and no need to save: MPUSS INACTIVE 💤
  • save_state = 1 — CPUx L1 and logic lost: MPUSS CSWR 🌀
  • save_state = 2 — CPUx L1 and logic lost + GIC lost: MPUSS OSWR 🔥
  • save_state = 3 — CPUx L1 and logic lost + GIC + L2 lost: DEVICE OFF 💀

💜 SEE ALSO 💜

  • Kernel file ./arch/arm/mach-omap2/omap-mpuss-lowpower.c 📁
  • struct cpu_pm_ops(9) 👑
  • omap4_hotplug_cpu(9) ⭐

xoxo, your kernel bestie 💅 — source/version: ./arch/arm/mach-omap2, date: October 2026, page: omap4_enter_lowpower(9) 🎀

📦 where this page comes from