driver/devfreq: DVFS framework for devices
This commit introduces a devfreq framework to manage device frequency
scaling. The framework includes the following features:
1.devfreq governor
- provide governor ops, including init, start, stop, exit
- default governor, performance & powersave
- customized governor, device can provide governor when register
2.runtime register and unregister
- device can runtime register & unregister, search by name
3.suspend and resume
- suspend and resume frequency scaling
4.notify
- register & unregister notifier callback, notify frequency changes
5.qos support
- simplified QoS, manage multiple freq range request
- including init, add/remove/update request, get value
Signed-off-by: guanyi <guanyi@xiaomi.com>
2025-04-02 14:19:24 +08:00
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#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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config DEVFREQ
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bool "devfreq"
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default n
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---help---
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devfreq framework, dynamic voltage frequency scaling(DVFS)
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for device
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if DEVFREQ
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2025-05-16 16:07:54 +08:00
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config DEVFREQ_PROCFS
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bool "devfreq_procfs"
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default n
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depends on FS_PROCFS
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select FS_PROCFS_REGISTER
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---help---
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devfreq procfs support
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config DEVFREQ_PROCFS_QOS
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bool "devfreq_procfs_qos"
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default n
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depends on DEVFREQ_PROCFS
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---help---
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devfreq procfs show qos requests and their callers
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2026-08-08 11:37:55 +08:00
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config DEVFREQ_GOV_ONDEMAND
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bool "devfreq_gov_ondemand"
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default n
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depends on !SCHED_CPULOAD_NONE
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---help---
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devfreq_ondemand governor
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if DEVFREQ_GOV_ONDEMAND
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config DEVFREQ_SAMPLE_RATE
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int "the default sample rate (us) to get the cpuload"
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default 1000000
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---help---
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Ondemand sample rate
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config DEVFREQ_LOAD_THRESHOLD
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int "the default cpu load threshold up to max cpu freq"
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default 80
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---help---
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Ondemand cpu load threshold
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endif
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driver/devfreq: DVFS framework for devices
This commit introduces a devfreq framework to manage device frequency
scaling. The framework includes the following features:
1.devfreq governor
- provide governor ops, including init, start, stop, exit
- default governor, performance & powersave
- customized governor, device can provide governor when register
2.runtime register and unregister
- device can runtime register & unregister, search by name
3.suspend and resume
- suspend and resume frequency scaling
4.notify
- register & unregister notifier callback, notify frequency changes
5.qos support
- simplified QoS, manage multiple freq range request
- including init, add/remove/update request, get value
Signed-off-by: guanyi <guanyi@xiaomi.com>
2025-04-02 14:19:24 +08:00
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endif
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