From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- Documentation/hwmon/lm95245.rst | 48 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/hwmon/lm95245.rst (limited to 'Documentation/hwmon/lm95245.rst') diff --git a/Documentation/hwmon/lm95245.rst b/Documentation/hwmon/lm95245.rst new file mode 100644 index 0000000000..836d9a3f53 --- /dev/null +++ b/Documentation/hwmon/lm95245.rst @@ -0,0 +1,48 @@ +Kernel driver lm95245 +===================== + +Supported chips: + + * TI LM95235 + + Addresses scanned: I2C 0x18, 0x29, 0x4c + + Datasheet: Publicly available at the TI website + + https://www.ti.com/lit/ds/symlink/lm95235.pdf + + * TI / National Semiconductor LM95245 + + Addresses scanned: I2C 0x18, 0x19, 0x29, 0x4c, 0x4d + + Datasheet: Publicly available at the TI website + + https://www.ti.com/lit/ds/symlink/lm95245.pdf + +Author: Alexander Stein + +Description +----------- + +LM95235 and LM95245 are 11-bit digital temperature sensors with a 2-wire System +Management Bus (SMBus) interface and TruTherm technology that can monitor +the temperature of a remote diode as well as its own temperature. +The chips can be used to very accurately monitor the temperature of +external devices such as microprocessors. + +All temperature values are given in millidegrees Celsius. Local temperature +is given within a range of -127 to +127.875 degrees. Remote temperatures are +given within a range of -127 to +255 degrees. Resolution depends on +temperature input and range. + +Each sensor has its own critical limit. Additionally, there is a relative +hysteresis value common to both critical limits. To make life easier to +user-space applications, two absolute values are exported, one for each +channel, but these values are of course linked. Only the local hysteresis +can be set from user-space, and the same delta applies to the remote +hysteresis. + +The lm95245 driver can change its update interval to a fixed set of values. +It will round up to the next selectable interval. See the datasheet for exact +values. Reading sensor values more often will do no harm, but will return +'old' values. -- cgit v1.2.3