usb: hub: Per-port setting to reduce TRSTRCY to 10 ms

[linux-2.6-microblaze.git] / Documentation / ABI / testing / sysfs-bus-usb

diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb
index a31a66d..08d456e 100644 (file)
--- a/Documentation/ABI/testing/sysfs-bus-usb
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@@ -206,6 +206,10 @@ Description:
                   using /sys/module/usbcore/parameters/old_scheme_first, but
                   it is often not desirable as the new scheme was introduced to
                   increase compatibility with more devices.
+                - Bit 1 reduces TRSTRCY to the 10 ms that are required by the
+                  USB 2.0 specification, instead of the 50 ms that are normally
+                  used to help make enumeration work better on some high speed
+                  devices.
 
 What:          /sys/bus/usb/devices/.../(hub interface)/portX/over_current_count
 Date:          February 2018