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| author | Guenter Roeck <linux@roeck-us.net> | 2020-01-27 19:35:44 +0100 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2020-03-09 04:35:46 +0100 |
| commit | 4d52b28ddfaede27e62abe10d7ce1a6803a1334d (patch) | |
| tree | 4859fa6e305e845e93a885bd7b6d165c2cba227f /Documentation/hwmon/k10temp.rst | |
| parent | hwmon: (k10temp) Reorganize and simplify temperature support detection (diff) | |
| download | linux-4d52b28ddfaede27e62abe10d7ce1a6803a1334d.tar.xz linux-4d52b28ddfaede27e62abe10d7ce1a6803a1334d.zip | |
hwmon: (k10temp) Update driver documentation
Document temperature, voltage, and current sensors available with
Family 17h and later CPUs.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon/k10temp.rst')
| -rw-r--r-- | Documentation/hwmon/k10temp.rst | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/Documentation/hwmon/k10temp.rst b/Documentation/hwmon/k10temp.rst index 4451d59b9425..8557e26281c3 100644 --- a/Documentation/hwmon/k10temp.rst +++ b/Documentation/hwmon/k10temp.rst @@ -100,9 +100,10 @@ socket type, not the processor's actual capabilities. Therefore, if you are using an AM3 processor on an AM2+ mainboard, you can safely use the "force=1" parameter. -There is one temperature measurement value, available as temp1_input in -sysfs. It is measured in degrees Celsius with a resolution of 1/8th degree. -Please note that it is defined as a relative value; to quote the AMD manual:: +For CPUs older than Family 17h, there is one temperature measurement value, +available as temp1_input in sysfs. It is measured in degrees Celsius with a +resolution of 1/8th degree. Please note that it is defined as a relative +value; to quote the AMD manual:: Tctl is the processor temperature control value, used by the platform to control cooling systems. Tctl is a non-physical temperature on an @@ -126,3 +127,25 @@ it. Models from 17h family report relative temperature, the driver aims to compensate and report the real temperature. + +On Family 17h and Family 18h CPUs, additional temperature sensors may report +Core Complex Die (CCD) temperatures. Up to 8 such temperatures are reported +as temp{3..10}_input, labeled Tccd{1..8}. Actual support depends on the CPU +variant. + +Various Family 17h and 18h CPUs report voltage and current telemetry +information. The following attributes may be reported. + +Attribute Label Description +=============== ======= ================ +in0_input Vcore Core voltage +in1_input Vsoc SoC voltage +curr1_input Icore Core current +curr2_input Isoc SoC current +=============== ======= ================ + +Current values are raw (unscaled) as reported by the CPU. Core current is +reported as multiples of 1A / LSB. SoC is reported as multiples of 0.25A +/ LSB. The real current is board specific. Reported currents should be seen +as rough guidance, and should be scaled using sensors3.conf as appropriate +for a given board. |