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Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-devfreq')
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| 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. | ||