regulator_get_optional(9)

💅 regulator_get_optional(9) — Kernel API Manual 💅

okay bestie, welcome to the Kernel API Manual page for regulator_get_optional(9) — yes, the optional one, and she's lowkey iconic. 🎀

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✨ NAME ✨

regulator_get_optional — obtain optional access to a regulator. 💖

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🌸 SYNOPSIS 🌸

struct regulator * regulator_get_optional (struct device *dev , const
       char *id );

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🫶 ARGUMENTS 🫶

• dev — device for regulator "consumer" — like, the device that's doing the consuming, bestie. 🦋
• id — Supply name or regulator ID. Slay, very straightforward. ✨

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🎀 DESCRIPTION 🎀

This one is intended for use by consumers for devices which can have some supplies unconnected in normal use, such as some MMC devices. Periodt. 💅

It can allow the regulator core to provide stub supplies for other supplies requested using normal regulator_get calls without disrupting the operation of drivers that can handle absent supplies. No cap, that's the whole vibe. 🧚

Use of supply names configured via set_consumer_device_supply is strongly encouraged. It is recommended that the supply name used should match the name used for the supply and/or the relevant device pins in the datasheet. fr fr, matching names is the moment. 🌈

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🔥 RETURN 🔥

Pointer to a struct regulator corresponding to the regulator producer, or an ERR_PTR encoded negative error number. So you either get the pointer or the encoded error situation — check it, bestie. 😭💀

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🌈 SEE ALSO 🌈

Kernel file: ./drivers/regulator/core.c — and here's the whole crew, every single one, no skipping 👑

• 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_supply(9)
• set_consumer_device_supply(9)
• regulator_dev_lookup(9)
• _regulator_get_common(9)
• regulator_get(9)
• regulator_get_exclusive(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)

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source: ./drivers/regulator · version/date: October 2026 · page: regulator_get_optional(9) — that's the footer info, bestie, and we are so done here 💜✨🦋