diff options
Diffstat (limited to '')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-devfreq | 67 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-devfreq-event | 12 |
2 files changed, 50 insertions, 29 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq index 9758eb85ade3..5e6b74f30406 100644 --- a/Documentation/ABI/testing/sysfs-class-devfreq +++ b/Documentation/ABI/testing/sysfs-class-devfreq @@ -37,20 +37,6 @@ Description: The /sys/class/devfreq/.../target_freq shows the next governor predicted target frequency of the corresponding devfreq object. -What: /sys/class/devfreq/.../polling_interval -Date: September 2011 -Contact: MyungJoo Ham <myungjoo.ham@samsung.com> -Description: - The /sys/class/devfreq/.../polling_interval shows and sets - the requested polling interval of the corresponding devfreq - object. The values are represented in ms. If the value is - less than 1 jiffy, it is considered to be 0, which means - no polling. This value is meaningless if the governor is - not polling; thus. If the governor is not using - devfreq-provided central polling - (/sys/class/devfreq/.../central_polling is 0), this value - may be useless. - What: /sys/class/devfreq/.../trans_stat Date: October 2012 Contact: MyungJoo Ham <myungjoo.ham@samsung.com> @@ -62,16 +48,9 @@ Description: driver should provide the list of available frequencies with its profile. If need to reset the statistics of devfreq behavior on a specific device, enter 0(zero) to 'trans_stat' - as following: - echo 0 > /sys/class/devfreq/.../trans_stat + as following:: -What: /sys/class/devfreq/.../userspace/set_freq -Date: September 2011 -Contact: MyungJoo Ham <myungjoo.ham@samsung.com> -Description: - The /sys/class/devfreq/.../userspace/set_freq shows and - sets the requested frequency for the devfreq object if - userspace governor is in effect. + echo 0 > /sys/class/devfreq/.../trans_stat What: /sys/class/devfreq/.../available_frequencies Date: October 2012 @@ -108,3 +87,45 @@ Description: frequency requested by governors and min_freq. The max_freq overrides min_freq because max_freq may be used to throttle devices to avoid overheating. + +What: /sys/class/devfreq/.../polling_interval +Date: September 2011 +Contact: MyungJoo Ham <myungjoo.ham@samsung.com> +Description: + The /sys/class/devfreq/.../polling_interval shows and sets + the requested polling interval of the corresponding devfreq + object. The values are represented in ms. If the value is + less than 1 jiffy, it is considered to be 0, which means + no polling. This value is meaningless if the governor is + not polling. + + A list of governors that support the node: + - simple_ondmenad + - tegra_actmon + +What: /sys/class/devfreq/.../userspace/set_freq +Date: September 2011 +Contact: MyungJoo Ham <myungjoo.ham@samsung.com> +Description: + The /sys/class/devfreq/.../userspace/set_freq shows and + sets the requested frequency for the devfreq object if + userspace governor is in effect. + + A list of governors that support the node: + - userspace + +What: /sys/class/devfreq/.../timer +Date: July 2020 +Contact: Chanwoo Choi <cw00.choi@samsung.com> +Description: + This ABI shows and stores the kind of work timer by users. + This work timer is used by devfreq workqueue in order to + monitor the device status such as utilization. The user + can change the work timer on runtime according to their demand + as following:: + + echo deferrable > /sys/class/devfreq/.../timer + echo delayed > /sys/class/devfreq/.../timer + + A list of governors that support the node: + - simple_ondemand diff --git a/Documentation/ABI/testing/sysfs-class-devfreq-event b/Documentation/ABI/testing/sysfs-class-devfreq-event index ceaf0f686d4a..dbe48495e55a 100644 --- a/Documentation/ABI/testing/sysfs-class-devfreq-event +++ b/Documentation/ABI/testing/sysfs-class-devfreq-event @@ -1,25 +1,25 @@ -What: /sys/class/devfreq-event/event(x)/ +What: /sys/class/devfreq-event/event<x>/ Date: January 2017 Contact: Chanwoo Choi <cw00.choi@samsung.com> Description: Provide a place in sysfs for the devfreq-event objects. This allows accessing various devfreq-event specific variables. - The name of devfreq-event object denoted as 'event(x)' which + The name of devfreq-event object denoted as 'event<x>' which includes the unique number of 'x' for each devfreq-event object. -What: /sys/class/devfreq-event/event(x)/name +What: /sys/class/devfreq-event/event<x>/name Date: January 2017 Contact: Chanwoo Choi <cw00.choi@samsung.com> Description: - The /sys/class/devfreq-event/event(x)/name attribute contains + The /sys/class/devfreq-event/event<x>/name attribute contains the name of the devfreq-event object. This attribute is read-only. -What: /sys/class/devfreq-event/event(x)/enable_count +What: /sys/class/devfreq-event/event<x>/enable_count Date: January 2017 Contact: Chanwoo Choi <cw00.choi@samsung.com> Description: - The /sys/class/devfreq-event/event(x)/enable_count attribute + The /sys/class/devfreq-event/event<x>/enable_count attribute contains the reference count to enable the devfreq-event object. If the device is enabled, the value of attribute is greater than zero. |