usb: core: lpm: fix usb3_hardware_lpm sysfs node

[firefly-linux-kernel-4.4.55.git] / Documentation / ABI / testing / sysfs-bus-usb

diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb
index 3a4abfc44f5e0d8a9e358626c1ca8251d756003d..136ba17d2da0558ad8ac129bc193e98486df0c0e 100644 (file)
--- a/Documentation/ABI/testing/sysfs-bus-usb
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@@ -134,19 +134,21 @@ Description:
                enabled for the device. Developer can write y/Y/1 or n/N/0 to
                the file to enable/disable the feature.
 
-What:          /sys/bus/usb/devices/.../power/usb3_hardware_lpm
-Date:          June 2015
+What:          /sys/bus/usb/devices/.../power/usb3_hardware_lpm_u1
+               /sys/bus/usb/devices/.../power/usb3_hardware_lpm_u2
+Date:          November 2015
 Contact:       Kevin Strasser <kevin.strasser@linux.intel.com>
+               Lu Baolu <baolu.lu@linux.intel.com>
 Description:
                If CONFIG_PM is set and a USB 3.0 lpm-capable device is plugged
                in to a xHCI host which supports link PM, it will check if U1
                and U2 exit latencies have been set in the BOS descriptor; if
-               the check is is passed and the host supports USB3 hardware LPM,
+               the check is passed and the host supports USB3 hardware LPM,
                USB3 hardware LPM will be enabled for the device and the USB
-               device directory will contain a file named
-               power/usb3_hardware_lpm. The file holds a string value (enable
-               or disable) indicating whether or not USB3 hardware LPM is
-               enabled for the device.
+               device directory will contain two files named
+               power/usb3_hardware_lpm_u1 and power/usb3_hardware_lpm_u2. These
+               files hold a string value (enable or disable) indicating whether
+               or not USB3 hardware LPM U1 or U2 is enabled for the device.
 
 What:          /sys/bus/usb/devices/.../removable
 Date:          February 2012