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-rw-r--r--Documentation/ABI/testing/sysfs-class-devfreq44
1 files changed, 36 insertions, 8 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq
index 23d78b5..0ba6ea2 100644
--- a/Documentation/ABI/testing/sysfs-class-devfreq
+++ b/Documentation/ABI/testing/sysfs-class-devfreq
@@ -11,7 +11,7 @@ What: /sys/class/devfreq/.../governor
Date: September 2011
Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
Description:
- The /sys/class/devfreq/.../governor shows the name of the
+ The /sys/class/devfreq/.../governor show or set the name of the
governor used by the corresponding devfreq object.
What: /sys/class/devfreq/.../cur_freq
@@ -19,15 +19,16 @@ Date: September 2011
Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
Description:
The /sys/class/devfreq/.../cur_freq shows the current
- frequency of the corresponding devfreq object.
+ frequency of the corresponding devfreq object. Same as
+ target_freq when get_cur_freq() is not implemented by
+ devfreq driver.
-What: /sys/class/devfreq/.../central_polling
-Date: September 2011
-Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+What: /sys/class/devfreq/.../target_freq
+Date: September 2012
+Contact: Rajagopal Venkat <rajagopal.venkat@linaro.org>
Description:
- The /sys/class/devfreq/.../central_polling shows whether
- the devfreq ojbect is using devfreq-provided central
- polling mechanism or not.
+ 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
@@ -43,6 +44,17 @@ Description:
(/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>
+Descrtiption:
+ This ABI shows the statistics of devfreq behavior on a
+ specific device. It shows the time spent in each state and
+ the number of transitions between states.
+ In order to activate this ABI, the devfreq target device
+ driver should provide the list of available frequencies
+ with its profile.
+
What: /sys/class/devfreq/.../userspace/set_freq
Date: September 2011
Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
@@ -50,3 +62,19 @@ Description:
The /sys/class/devfreq/.../userspace/set_freq shows and
sets the requested frequency for the devfreq object if
userspace governor is in effect.
+
+What: /sys/class/devfreq/.../available_frequencies
+Date: October 2012
+Contact: Nishanth Menon <nm@ti.com>
+Description:
+ The /sys/class/devfreq/.../available_frequencies shows
+ the available frequencies of the corresponding devfreq object.
+ This is a snapshot of available frequencies and not limited
+ by the min/max frequency restrictions.
+
+What: /sys/class/devfreq/.../available_governors
+Date: October 2012
+Contact: Nishanth Menon <nm@ti.com>
+Description:
+ The /sys/class/devfreq/.../available_governors shows
+ currently available governors in the system.