Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces

Add documentation for the new attributes for exposing reset causes for
the next type of resets: caused by different watchdog, BIOS reload,
ASIC reset request.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/Documentation/ABI/stable/sysfs-driver-mlxreg-io b/Documentation/ABI/stable/sysfs-driver-mlxreg-io
index 156319fc5b80..28ca00cc8d6b 100644
--- a/Documentation/ABI/stable/sysfs-driver-mlxreg-io
+++ b/Documentation/ABI/stable/sysfs-driver-mlxreg-io
@@ -127,3 +127,23 @@ Description:	These files show the system reset cause, as following: ComEx
                 the last reset cause.
 
                 The files are read only.
+
+Date:           June 2019
+KernelVersion:  5.3
+Contact:        Vadim Pasternak <vadimpmellanox.com>
+Description:    These files show the system reset cause, as following:
+                COMEX thermal shutdown; wathchdog power off or reset was derived
+                by one of the next components: COMEX, switch board or by Small Form
+                Factor mezzanine, reset requested from ASIC, reset cuased by BIOS
+                reload. Value 1 in file means this is reset cause, 0 - otherwise.
+                Only one of the above causes could be 1 at the same time, representing
+                only last reset cause.
+
+                The files are read only.
+
+What:           /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_thermal
+What:           /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_wd
+What:           /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_from_asic
+What:           /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_reload_bios
+What:           /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sff_wd
+What:           /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_swb_wd