diff options
Diffstat (limited to 'Documentation/hwmon/occ')
| -rw-r--r-- | Documentation/hwmon/occ | 93 |
1 files changed, 67 insertions, 26 deletions
diff --git a/Documentation/hwmon/occ b/Documentation/hwmon/occ index e787596e03fe..bf41c162d70e 100644 --- a/Documentation/hwmon/occ +++ b/Documentation/hwmon/occ @@ -2,6 +2,7 @@ Kernel driver occ-hwmon ======================= Supported chips: + * POWER8 * POWER9 @@ -37,53 +38,87 @@ Some entries are only present with certain OCC sensor versions or only on certain OCCs in the system. The version number is not exported to the user but can be inferred. -temp[1-n]_label OCC sensor ID. +temp[1-n]_label + OCC sensor ID. + [with temperature sensor version 1] - temp[1-n]_input Measured temperature of the component in millidegrees + + temp[1-n]_input + Measured temperature of the component in millidegrees Celsius. + [with temperature sensor version >= 2] - temp[1-n]_type The FRU (Field Replaceable Unit) type + + temp[1-n]_type + The FRU (Field Replaceable Unit) type (represented by an integer) for the component that this sensor measures. - temp[1-n]_fault Temperature sensor fault boolean; 1 to indicate + temp[1-n]_fault + Temperature sensor fault boolean; 1 to indicate that a fault is present or 0 to indicate that no fault is present. + [with type == 3 (FRU type is VRM)] - temp[1-n]_alarm VRM temperature alarm boolean; 1 to indicate + + temp[1-n]_alarm + VRM temperature alarm boolean; 1 to indicate alarm, 0 to indicate no alarm + [else] - temp[1-n]_input Measured temperature of the component in - millidegrees Celsius. -freq[1-n]_label OCC sensor ID. -freq[1-n]_input Measured frequency of the component in MHz. + temp[1-n]_input + Measured temperature of the component in + millidegrees Celsius. -power[1-n]_input Latest measured power reading of the component in +freq[1-n]_label + OCC sensor ID. +freq[1-n]_input + Measured frequency of the component in MHz. +power[1-n]_input + Latest measured power reading of the component in microwatts. -power[1-n]_average Average power of the component in microwatts. -power[1-n]_average_interval The amount of time over which the power average +power[1-n]_average + Average power of the component in microwatts. +power[1-n]_average_interval + The amount of time over which the power average was taken in microseconds. + [with power sensor version < 2] - power[1-n]_label OCC sensor ID. + + power[1-n]_label + OCC sensor ID. + [with power sensor version >= 2] - power[1-n]_label OCC sensor ID + function ID + channel in the form + + power[1-n]_label + OCC sensor ID + function ID + channel in the form of a string, delimited by underscores, i.e. "0_15_1". Both the function ID and channel are integers that further identify the power sensor. + [with power sensor version 0xa0] - power[1-n]_label OCC sensor ID + sensor type in the form of a string, + + power[1-n]_label + OCC sensor ID + sensor type in the form of a string, delimited by an underscore, i.e. "0_system". Sensor type will be one of "system", "proc", "vdd" or "vdn". For this sensor version, OCC sensor ID will be the same for all power sensors. + [present only on "master" OCC; represents the whole system power; only one of - this type of power sensor will be present] - power[1-n]_label "system" - power[1-n]_input Latest system output power in microwatts. - power[1-n]_cap Current system power cap in microwatts. - power[1-n]_cap_not_redundant System power cap in microwatts when - there is not redundant power. - power[1-n]_cap_max Maximum power cap that the OCC can enforce in +this type of power sensor will be present] + + power[1-n]_label + "system" + power[1-n]_input + Latest system output power in microwatts. + power[1-n]_cap + Current system power cap in microwatts. + power[1-n]_cap_not_redundant + System power cap in microwatts when + there is not redundant power. + power[1-n]_cap_max + Maximum power cap that the OCC can enforce in microwatts. power[1-n]_cap_min Minimum power cap that the OCC can enforce in microwatts. @@ -94,8 +129,11 @@ power[1-n]_average_interval The amount of time over which the power average ignored, i.e. requesting a power cap of 500900000 microwatts will result in a power cap request of 500 watts. + [with caps sensor version > 1] - power[1-n]_cap_user_source Indicates how the user power cap was + + power[1-n]_cap_user_source + Indicates how the user power cap was set. This is an integer that maps to system or firmware components that can set the user power cap. @@ -104,9 +142,12 @@ The following "extn" sensors are exported as a way for the OCC to provide data that doesn't fit anywhere else. The meaning of these sensors is entirely dependent on their data, and cannot be statically defined. -extn[1-n]_label ASCII ID or OCC sensor ID. -extn[1-n]_flags This is one byte hexadecimal value. Bit 7 indicates the +extn[1-n]_label + ASCII ID or OCC sensor ID. +extn[1-n]_flags + This is one byte hexadecimal value. Bit 7 indicates the type of the label attribute; 1 for sensor ID, 0 for ASCII ID. Other bits are reserved. -extn[1-n]_input 6 bytes of hexadecimal data, with a meaning defined by +extn[1-n]_input + 6 bytes of hexadecimal data, with a meaning defined by the sensor ID. |