diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-10-07 17:17:18 -0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-10-07 17:17:18 -0400 |
| commit | 7811ac276bb9f77aa6475110ef340c1bc3090def (patch) | |
| tree | 5c8b9d6033b7a52f0cd67394c20e437001f577a7 /Documentation | |
| parent | 9696cc90071e3660ec02a3728acdedb68afdce4c (diff) | |
| parent | ce26c5bb9569d8b826f01b8620fc16d8da6821e9 (diff) | |
Merge branch 'pm-devfreq' into pm-for-linus
* pm-devfreq:
PM / devfreq: Add basic governors
PM / devfreq: Add common sysfs interfaces
PM: Introduce devfreq: generic DVFS framework with device-specific OPPs
PM / OPP: Add OPP availability change notifier.
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-devfreq | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq new file mode 100644 index 000000000000..23d78b5aab11 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-devfreq | |||
| @@ -0,0 +1,52 @@ | |||
| 1 | What: /sys/class/devfreq/.../ | ||
| 2 | Date: September 2011 | ||
| 3 | Contact: MyungJoo Ham <myungjoo.ham@samsung.com> | ||
| 4 | Description: | ||
| 5 | Provide a place in sysfs for the devfreq objects. | ||
| 6 | This allows accessing various devfreq specific variables. | ||
| 7 | The name of devfreq object denoted as ... is same as the | ||
| 8 | name of device using devfreq. | ||
| 9 | |||
| 10 | What: /sys/class/devfreq/.../governor | ||
| 11 | Date: September 2011 | ||
| 12 | Contact: MyungJoo Ham <myungjoo.ham@samsung.com> | ||
| 13 | Description: | ||
| 14 | The /sys/class/devfreq/.../governor shows the name of the | ||
| 15 | governor used by the corresponding devfreq object. | ||
| 16 | |||
| 17 | What: /sys/class/devfreq/.../cur_freq | ||
| 18 | Date: September 2011 | ||
| 19 | Contact: MyungJoo Ham <myungjoo.ham@samsung.com> | ||
| 20 | Description: | ||
| 21 | The /sys/class/devfreq/.../cur_freq shows the current | ||
| 22 | frequency of the corresponding devfreq object. | ||
| 23 | |||
| 24 | What: /sys/class/devfreq/.../central_polling | ||
| 25 | Date: September 2011 | ||
| 26 | Contact: MyungJoo Ham <myungjoo.ham@samsung.com> | ||
| 27 | Description: | ||
| 28 | The /sys/class/devfreq/.../central_polling shows whether | ||
| 29 | the devfreq ojbect is using devfreq-provided central | ||
| 30 | polling mechanism or not. | ||
| 31 | |||
| 32 | What: /sys/class/devfreq/.../polling_interval | ||
| 33 | Date: September 2011 | ||
| 34 | Contact: MyungJoo Ham <myungjoo.ham@samsung.com> | ||
| 35 | Description: | ||
| 36 | The /sys/class/devfreq/.../polling_interval shows and sets | ||
| 37 | the requested polling interval of the corresponding devfreq | ||
| 38 | object. The values are represented in ms. If the value is | ||
| 39 | less than 1 jiffy, it is considered to be 0, which means | ||
| 40 | no polling. This value is meaningless if the governor is | ||
| 41 | not polling; thus. If the governor is not using | ||
| 42 | devfreq-provided central polling | ||
| 43 | (/sys/class/devfreq/.../central_polling is 0), this value | ||
| 44 | may be useless. | ||
| 45 | |||
| 46 | What: /sys/class/devfreq/.../userspace/set_freq | ||
| 47 | Date: September 2011 | ||
| 48 | Contact: MyungJoo Ham <myungjoo.ham@samsung.com> | ||
| 49 | Description: | ||
| 50 | The /sys/class/devfreq/.../userspace/set_freq shows and | ||
| 51 | sets the requested frequency for the devfreq object if | ||
| 52 | userspace governor is in effect. | ||