summaryrefslogtreecommitdiffstats
path: root/Documentation/ABI/stable/sysfs-bus-w1
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--Documentation/ABI/stable/sysfs-bus-w112
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-bus-w1 b/Documentation/ABI/stable/sysfs-bus-w1
new file mode 100644
index 000000000..5cd5e872b
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-bus-w1
@@ -0,0 +1,12 @@
+What: /sys/bus/w1/devices/.../w1_master_timeout_us
+Date: April 2015
+Contact: Dmitry Khromov <dk@icelogic.net>
+Description: Bus scanning interval, microseconds component.
+ Some of 1-Wire devices commonly associated with physical access
+ control systems are attached/generate presence for as short as
+ 100 ms - hence the tens-to-hundreds milliseconds scan intervals
+ are required.
+
+ see Documentation/w1/w1-generic.rst for detailed information.
+Users: any user space application which wants to know bus scanning
+ interval