set_supply(9)

✨ set_supply(9) ✨

Kernel API Manual, bestie — we’re so back 💖

🌸 NAME 🌸

set_supply — set regulator supply regulator. That’s literally the whole vibe: it sets the supply regulator for a regulator, no cap 💅

🦋 SYNOPSIS 🦋

int set_supply (struct regulator_dev *rdev , struct regulator_dev
       *supply_rdev );

🎀 ARGUMENTS 🎀

• rdev — the regulator, and it’s locked 🔒 the page literally says “regulator (locked)”.
• supply_rdev — the supply regulator, also locked 🔒 the page says “supply regulator (locked))”, and yes, both of these babies are locked, periodt.

💖 DESCRIPTION 💖

Okay so platform initialisation code calls this to set the supply regulator for this regulator. The whole point? It ensures that a regulator’s supply will also be enabled by the core when its child is enabled — yes, the supply gets switched on too, fr fr ✨

🔥 RETURN 🔥

• 0 on success — slay 💅
• a negative error number on failure — not slay 😭

🌈 SEE ALSO 🌈

Kernel file ./drivers/regulator/core.c — that’s where the regulator core lives, iykyk 🫶

The full SEE ALSO friend group:

• regulator_lock_nested(9)
• regulator_lock(9)
• regulator_unlock(9)
• regulator_lock_two(9)
• regulator_unlock_two(9)
• regulator_unlock_dependent(9)
• regulator_lock_dependent(9)
• set_machine_constraints(9)
• regulator_event_work_fn(9)
• regulator_event_forward_notifier(9)
• register_regulator_event_forwarding(9)
• set_consumer_device_supply(9)
• regulator_dev_lookup(9)
• _regulator_get_common(9)
• regulator_get(9)
• regulator_get_exclusive(9)
• regulator_get_optional(9)
• regulator_put(9)
• regulator_register_supply_alias(9)
• regulator_unregister_supply_alias(9)
• regulator_bulk_register_supply_alias(9)
• regulator_bulk_unregister_supply_alias(9)
• regulator_ena_gpio_ctrl(9)
• _regulator_check_status_enabled(9)
• _regulator_handle_consumer_enable(9)
• _regulator_handle_consumer_disable(9)
• regulator_enable(9)
• regulator_disable(9)
• regulator_force_disable(9)
• regulator_disable_deferred(9)
• regulator_is_enabled(9)
• regulator_count_voltages(9)
• regulator_list_voltage(9)
• regulator_get_regmap(9)
• regulator_get_hardware_vsel_register(9)
• regulator_list_hardware_vsel(9)
• regulator_hardware_enable(9)
• regulator_get_linear_step(9)
• regulator_is_supported_voltage(9)
• regulator_set_voltage(9)
• regulator_set_voltage_time(9)
• regulator_set_voltage_time_sel(9)
• regulator_sync_voltage(9)
• regulator_get_voltage(9)
• regulator_set_current_limit(9)
• regulator_get_current_limit(9)
• regulator_get_unclaimed_power_budget(9)
• regulator_request_power_budget(9)
• regulator_free_power_budget(9)
• regulator_set_mode(9)
• regulator_get_mode(9)
• regulator_get_error_flags(9)
• regulator_set_load(9)
• regulator_allow_bypass(9)
• regulator_register_notifier(9)
• regulator_unregister_notifier(9)
• regulator_bulk_get(9)
• regulator_bulk_enable(9)
• regulator_bulk_disable(9)
• regulator_bulk_force_disable(9)
• regulator_bulk_free(9)
• regulator_handle_critical(9)
• regulator_notifier_call_chain(9)
• regulator_mode_to_status(9)
• regulator_register(9)
• regulator_unregister(9)
• regulator_suspend(9)
• regulator_has_full_constraints(9)
• rdev_get_drvdata(9)
• regulator_get_drvdata(9)
• regulator_set_drvdata(9)
• rdev_get_id(9)

and that’s the whole crew 🫶💜

---

Cute sign-off bestie: source/version is ./drivers/regulator, date is October 2026, and the page is set_supply(9) — that’s the footer, periodt 💖🎀