throttlectl_...level_select(9)

💅 throttlectl_...level_select(9) 💅

okay bestie, welcome to the Kernel API Manual page for this one — it's giving “tiny config function, big thermal energy,” and we're gonna get into it. The function is throttlectl_cpu_level_select, and its whole personality is programming the CPU pulse skipper config. No cap. 🫶

🌸 NAME 🌸

throttlectl_cpu_level_select — program CPU pulse skipper config ✨

🔥 SYNOPSIS 🔥

void throttlectl_cpu_level_select (struct tegra_soctherm *ts , enum
soctherm_throttle_id throt );

🎀 ARGUMENTS 🎀

• ts — pointer to a struct tegra_soctherm. literally a pointer, bestie, don't lose it 💖
• throt — the LIGHT/HEAVY of throttle event id. yes, that's the flavor selector vibe 👑

💜 DESCRIPTION 💜

okay so pulse skippers are used to throttle clock frequencies — that's the whole gig. This function programs the pulse skippers based on throt and platform data. it's doing the programming job, periodt. ✨

This function is used on SoCs which have CPU-local pulse skipper control, such as T13x. so if your SoC is not in that club, this is not its moment. iykyk. 🦋

It programs soctherm's interface to Denver:CCROC NV_THERM in terms of Low, Medium and HIGH throttling vectors. yes bestie, Low, Medium and HIGH — the whole little thermal ladder. 🌈

PSKIP_BYPASS mode is set as required per HW spec. that's the rule, and we respect the HW spec in this house 💅

🦋 SEE ALSO 🦋

Kernel file ./drivers/thermal/tegra/soctherm.c — the actual source, go drink water and read it 🍓

and the whole friend group:

• ccroc_writel(9)
• ccroc_readl(9)
• enforce_temp_range(9)
• thermtrip_program(9)
• throttrip_program(9)
• tegra_soctherm_set_hwtrips(9)
• soctherm_thermal_isr_thread(9)
• soctherm_oc_intr_enable(9)
• soctherm_handle_alarm(9)
• soctherm_edp_isr_thread(9)
• soctherm_edp_isr(9)
• soctherm_oc_irq_lock(9)
• soctherm_oc_irq_sync_unlock(9)
• soctherm_oc_irq_enable(9)
• soctherm_oc_irq_disable(9)
• soctherm_oc_irq_map(9)
• soctherm_irq_domain_xlate_twocell(9)
• soctherm_oc_int_init(9)
• soctherm_init_hw_throt_cdev(9)
• throttlectl_cpu_level_cfg(9)
• throttlectl_cpu_mn(9)
• throttlectl_gpu_level_select(9)
• soctherm_throttle_program(9)

---

that's the page, bestie 🫶 — source/version is ./drivers/thermal/tegra, dated October 2026, and it belongs to throttlectl_...level_select(9). mwah 💋✨