diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-devfreq')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-devfreq | 60 |
1 files changed, 36 insertions, 24 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq index deefffb3bbe4..386bc230a33d 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 @@ -109,6 +88,35 @@ Description: 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; thus. If the governor is not using + devfreq-provided central polling + (/sys/class/devfreq/.../central_polling is 0), this value + may be useless. + + 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> @@ -117,6 +125,10 @@ Description: 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: + as following:: + echo deferrable > /sys/class/devfreq/.../timer echo delayed > /sys/class/devfreq/.../timer + + A list of governors that support the node: + - simple_ondemand |