1 files changed, 26 insertions, 1 deletions

diff --git a/Documentation/ABI/testing/sysfs-devices-power b/Documentation/ABI/testing/sysfs-devices-power
index efe449bdf811..7dbf96b724ed 100644
--- a/Documentation/ABI/testing/sysfs-devices-power
+++ b/Documentation/ABI/testing/sysfs-devices-power
@@ -187,7 +187,7 @@ Description:
                 Not all drivers support this attribute.  If it isn't supported,
                 attempts to read or write it will yield I/O errors.
 
-What:           /sys/devices/.../power/pm_qos_latency_us
+What:           /sys/devices/.../power/pm_qos_resume_latency_us
 Date:           March 2012
 Contact:        Rafael J. Wysocki <rjw@rjwysocki.net>
 Description:
@@ -205,6 +205,31 @@ Description:
                 This attribute has no effect on system-wide suspend/resume and
                 hibernation.
 
+What:           /sys/devices/.../power/pm_qos_latency_tolerance_us
+Date:           January 2014
+Contact:        Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+                The /sys/devices/.../power/pm_qos_latency_tolerance_us attribute
+                contains the PM QoS active state latency tolerance limit for the
+                given device in microseconds.  That is the maximum memory access
+                latency the device can suffer without any visible adverse
+                effects on user space functionality.  If that value is the
+                string "any", the latency does not matter to user space at all,
+                but hardware should not be allowed to set the latency tolerance
+                for the device automatically.
+
+                Reading "auto" from this file means that the maximum memory
+                access latency for the device may be determined automatically
+                by the hardware as needed.  Writing "auto" to it allows the
+                hardware to be switched to this mode if there are no other
+                latency tolerance requirements from the kernel side.
+
+                This attribute is only present if the feature controlled by it
+                is supported by the hardware.
+
+                This attribute has no effect on runtime suspend and resume of
+                devices and on system-wide suspend/resume and hibernation.
+
 What:           /sys/devices/.../power/pm_qos_no_power_off
 Date:           September 2012
 Contact:        Rafael J. Wysocki <rjw@rjwysocki.net>