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authorKun Yi <kunyi@google.com>2020-12-12 00:54:25 +0300
committerGuenter Roeck <linux@roeck-us.net>2020-12-12 19:32:35 +0300
commite7bb1a2ab8c4b1569f5b271fd87ca203b1e673a5 (patch)
treec8b4010bea1ed3912e65defec572a1e08e2777e2 /drivers/hwmon/Makefile
parent561e3121841a8541402a331c19e9b78e3d2786d3 (diff)
downloadlinux-e7bb1a2ab8c4b1569f5b271fd87ca203b1e673a5.tar.xz
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/Makefile')
-rw-r--r--drivers/hwmon/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 32cff6b0593e..09a86c5e1d29 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -161,6 +161,7 @@ obj-$(CONFIG_SENSORS_POWR1220) += powr1220.o
obj-$(CONFIG_SENSORS_PWM_FAN) += pwm-fan.o
obj-$(CONFIG_SENSORS_RASPBERRYPI_HWMON) += raspberrypi-hwmon.o
obj-$(CONFIG_SENSORS_S3C) += s3c-hwmon.o
+obj-$(CONFIG_SENSORS_SBTSI) += sbtsi_temp.o
obj-$(CONFIG_SENSORS_SCH56XX_COMMON)+= sch56xx-common.o
obj-$(CONFIG_SENSORS_SCH5627) += sch5627.o
obj-$(CONFIG_SENSORS_SCH5636) += sch5636.o