diff options
| author | Kun Yi <kunyi@google.com> | 2020-12-11 13:54:25 -0800 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2020-12-12 08:32:35 -0800 |
| commit | e7bb1a2ab8c4b1569f5b271fd87ca203b1e673a5 (patch) | |
| tree | c8b4010bea1ed3912e65defec572a1e08e2777e2 /drivers/hwmon/Kconfig | |
| parent | 561e3121841a8541402a331c19e9b78e3d2786d3 (diff) | |
hwmon: (sbtsi) Add basic support for SB-TSI sensors
SB Temperature Sensor Interface (SB-TSI) is an SMBus compatible
interface that reports AMD SoC's Ttcl (normalized temperature),
and resembles a typical 8-pin remote temperature sensor's I2C interface
to BMC.
This commit adds basic support using this interface to read CPU
temperature, and read/write high/low CPU temp thresholds.
To instantiate this driver on an AMD CPU with SB-TSI
support, the i2c bus number would be the bus connected from the board
management controller (BMC) to the CPU. The i2c address is specified in
Section 6.3.1 of the spec [1]: The SB-TSI address is normally 98h for
socket 0 and 90h for socket 1, but it could vary based on hardware address
select pins.
[1]: https://www.amd.com/system/files/TechDocs/56255_OSRR.pdf
Test status: tested reading temp1_input, and reading/writing
temp1_max/min.
Signed-off-by: Kun Yi <kunyi@google.com>
Link: https://lore.kernel.org/r/20201211215427.3281681-2-kunyi@google.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/Kconfig')
| -rw-r--r-- | drivers/hwmon/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 49920a1af3d0..1ecf697d8d99 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1533,6 +1533,16 @@ config SENSORS_SL28CPLD This driver can also be built as a module. If so, the module will be called sl28cpld-hwmon. +config SENSORS_SBTSI + tristate "Emulated SB-TSI temperature sensor" + depends on I2C + help + If you say yes here you get support for emulated temperature + sensors on AMD SoCs with SB-TSI interface connected to a BMC device. + + This driver can also be built as a module. If so, the module will + be called sbtsi_temp. + config SENSORS_SHT15 tristate "Sensiron humidity and temperature sensors. SHT15 and compat." depends on GPIOLIB || COMPILE_TEST |