19005b650SMyungJoo HamWhat: /sys/class/devfreq/.../ 29005b650SMyungJoo HamDate: September 2011 39005b650SMyungJoo HamContact: MyungJoo Ham <myungjoo.ham@samsung.com> 49005b650SMyungJoo HamDescription: 59005b650SMyungJoo Ham Provide a place in sysfs for the devfreq objects. 69005b650SMyungJoo Ham This allows accessing various devfreq specific variables. 79005b650SMyungJoo Ham The name of devfreq object denoted as ... is same as the 89005b650SMyungJoo Ham name of device using devfreq. 99005b650SMyungJoo Ham 109005b650SMyungJoo HamWhat: /sys/class/devfreq/.../governor 119005b650SMyungJoo HamDate: September 2011 129005b650SMyungJoo HamContact: MyungJoo Ham <myungjoo.ham@samsung.com> 139005b650SMyungJoo HamDescription: 149005b650SMyungJoo Ham The /sys/class/devfreq/.../governor shows the name of the 159005b650SMyungJoo Ham governor used by the corresponding devfreq object. 169005b650SMyungJoo Ham 179005b650SMyungJoo HamWhat: /sys/class/devfreq/.../cur_freq 189005b650SMyungJoo HamDate: September 2011 199005b650SMyungJoo HamContact: MyungJoo Ham <myungjoo.ham@samsung.com> 209005b650SMyungJoo HamDescription: 219005b650SMyungJoo Ham The /sys/class/devfreq/.../cur_freq shows the current 227f98a905SRajagopal Venkat frequency of the corresponding devfreq object. Same as 237f98a905SRajagopal Venkat target_freq when get_cur_freq() is not implemented by 247f98a905SRajagopal Venkat devfreq driver. 257f98a905SRajagopal Venkat 267f98a905SRajagopal VenkatWhat: /sys/class/devfreq/.../target_freq 277f98a905SRajagopal VenkatDate: September 2012 287f98a905SRajagopal VenkatContact: Rajagopal Venkat <rajagopal.venkat@linaro.org> 297f98a905SRajagopal VenkatDescription: 307f98a905SRajagopal Venkat The /sys/class/devfreq/.../target_freq shows the next governor 317f98a905SRajagopal Venkat predicted target frequency of the corresponding devfreq object. 329005b650SMyungJoo Ham 339005b650SMyungJoo HamWhat: /sys/class/devfreq/.../polling_interval 349005b650SMyungJoo HamDate: September 2011 359005b650SMyungJoo HamContact: MyungJoo Ham <myungjoo.ham@samsung.com> 369005b650SMyungJoo HamDescription: 379005b650SMyungJoo Ham The /sys/class/devfreq/.../polling_interval shows and sets 389005b650SMyungJoo Ham the requested polling interval of the corresponding devfreq 399005b650SMyungJoo Ham object. The values are represented in ms. If the value is 409005b650SMyungJoo Ham less than 1 jiffy, it is considered to be 0, which means 419005b650SMyungJoo Ham no polling. This value is meaningless if the governor is 429005b650SMyungJoo Ham not polling; thus. If the governor is not using 439005b650SMyungJoo Ham devfreq-provided central polling 449005b650SMyungJoo Ham (/sys/class/devfreq/.../central_polling is 0), this value 459005b650SMyungJoo Ham may be useless. 46ce26c5bbSMyungJoo Ham 47ce26c5bbSMyungJoo HamWhat: /sys/class/devfreq/.../userspace/set_freq 48ce26c5bbSMyungJoo HamDate: September 2011 49ce26c5bbSMyungJoo HamContact: MyungJoo Ham <myungjoo.ham@samsung.com> 50ce26c5bbSMyungJoo HamDescription: 51ce26c5bbSMyungJoo Ham The /sys/class/devfreq/.../userspace/set_freq shows and 52ce26c5bbSMyungJoo Ham sets the requested frequency for the devfreq object if 53ce26c5bbSMyungJoo Ham userspace governor is in effect. 54*d287de85SNishanth Menon 55*d287de85SNishanth MenonWhat: /sys/class/devfreq/.../available_frequencies 56*d287de85SNishanth MenonDate: October 2012 57*d287de85SNishanth MenonContact: Nishanth Menon <nm@ti.com> 58*d287de85SNishanth MenonDescription: 59*d287de85SNishanth Menon The /sys/class/devfreq/.../available_frequencies shows 60*d287de85SNishanth Menon the available frequencies of the corresponding devfreq object. 61*d287de85SNishanth Menon This is a snapshot of available frequencies and not limited 62*d287de85SNishanth Menon by the min/max frequency restrictions. 63