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

Add documentation for the new attributes:
- "asic2_health" - health of 2-nd ASIC for system equipped with two ASICs.
- "asic_reset" and "asic2_reset" - ASICs reset control.
- "comm_chnl_ready" - communication channel indication to remote end (BMC).
- "config3" - indication of system minor BOM changes.

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20220711084559.62447-10-vadimp@nvidia.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/Documentation/ABI/stable/sysfs-driver-mlxreg-io b/Documentation/ABI/stable/sysfs-driver-mlxreg-io
index 3539b18..af0cbf1 100644 (file)
--- a/Documentation/ABI/stable/sysfs-driver-mlxreg-io
+++ b/Documentation/ABI/stable/sysfs-driver-mlxreg-io
@@ -503,3 +503,42 @@ Description:       This file shows QSFP ports power status. The value is set to 0
                0 - Power good, 1 - Not power good.
 
                The files are read only.
+
+What:          /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic2_health
+Date:          July 2022
+KernelVersion: 5.20
+Contact:       Vadim Pasternak <vadimp@nvidia.com>
+Description:   This file shows 2-nd ASIC health status. The possible values are:
+               0 - health failed, 2 - health OK, 3 - ASIC in booting state.
+
+               The file is read only.
+
+What:          /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic_reset
+What:          /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic2_reset
+Date:          July 2022
+KernelVersion: 5.20
+Contact:       Vadim Pasternak <vadimp@nvidia.com>
+Description:   These files allow to each of ASICs by writing 1.
+
+               The files are write only.
+
+
+What:          /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/comm_chnl_ready
+Date:          July 2022
+KernelVersion: 5.20
+Contact:       Vadim Pasternak <vadimp@nvidia.com>
+Description:   This file is used to indicate remote end (for example BMC) that system
+               host CPU is ready for sending telemetry data to remote end.
+               For indication the file should be written 1.
+
+               The file is write only.
+
+What:          /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/config3
+Date:          January 2020
+KernelVersion: 5.6
+Contact:       Vadim Pasternak <vadimp@nvidia.com>
+Description:   The file indicates COME module hardware configuration.
+               The value is pushed by hardware through GPIO pins.
+               The purpose is to expose some minor BOM changes for the same system SKU.
+
+               The file is read only.