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| author | Lukas Zapletal <lzap+git@redhat.com> | 2019-09-23 13:59:31 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2019-10-02 16:35:57 +0300 |
| commit | 43fd0cf4c6dcd5a0e383e60168428bda0bc56374 (patch) | |
| tree | b6bfe87cc385eed8d6b4a287f6d5a8e29a0d39ba /Documentation/hwmon/k10temp.rst | |
| parent | 539ad001d1557731cb38d4a9d0e8e16244b2d913 (diff) | |
| download | linux-43fd0cf4c6dcd5a0e383e60168428bda0bc56374.tar.xz | |
hwmon: (k10temp) Update documentation and add temp2_input info
It's been a while since the k10temp documentation has been updated.
There are new CPU families supported as well as Tdie temp was added.
This patch adds all missing families which I was able to find from git
history and provides more info about Tctl vs Tdie exported temps.
Signed-off-by: Lukas Zapletal <lzap+git@redhat.com>
Link: https://lore.kernel.org/r/20190923105931.27881-1-lzap+git@redhat.com
[groeck: Formatting]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon/k10temp.rst')
| -rw-r--r-- | Documentation/hwmon/k10temp.rst | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/Documentation/hwmon/k10temp.rst b/Documentation/hwmon/k10temp.rst index 12a86ba17de9..4451d59b9425 100644 --- a/Documentation/hwmon/k10temp.rst +++ b/Documentation/hwmon/k10temp.rst @@ -21,10 +21,17 @@ Supported chips: * AMD Family 14h processors: "Brazos" (C/E/G/Z-Series) -* AMD Family 15h processors: "Bulldozer" (FX-Series), "Trinity", "Kaveri", "Carrizo" +* AMD Family 15h processors: "Bulldozer" (FX-Series), "Trinity", "Kaveri", + "Carrizo", "Stoney Ridge", "Bristol Ridge" * AMD Family 16h processors: "Kabini", "Mullins" +* AMD Family 17h processors: "Zen", "Zen 2" + +* AMD Family 18h processors: "Hygon Dhyana" + +* AMD Family 19h processors: "Zen 3" + Prefix: 'k10temp' Addresses scanned: PCI space @@ -110,3 +117,12 @@ The maximum value for Tctl is available in the file temp1_max. If the BIOS has enabled hardware temperature control, the threshold at which the processor will throttle itself to avoid damage is available in temp1_crit and temp1_crit_hyst. + +On some AMD CPUs, there is a difference between the die temperature (Tdie) and +the reported temperature (Tctl). Tdie is the real measured temperature, and +Tctl is used for fan control. While Tctl is always available as temp1_input, +the driver exports Tdie temperature as temp2_input for those CPUs which support +it. + +Models from 17h family report relative temperature, the driver aims to +compensate and report the real temperature. |