15def4c47SEmmanuel Vadot# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 25def4c47SEmmanuel Vadot%YAML 1.2 35def4c47SEmmanuel Vadot--- 45def4c47SEmmanuel Vadot$id: http://devicetree.org/schemas/hwmon/amd,sbtsi.yaml# 55def4c47SEmmanuel Vadot$schema: http://devicetree.org/meta-schemas/core.yaml# 65def4c47SEmmanuel Vadot 75def4c47SEmmanuel Vadottitle: > 85def4c47SEmmanuel Vadot Sideband interface Temperature Sensor Interface (SB-TSI) compliant 95def4c47SEmmanuel Vadot AMD SoC temperature device 105def4c47SEmmanuel Vadot 115def4c47SEmmanuel Vadotmaintainers: 125def4c47SEmmanuel Vadot - Kun Yi <kunyi@google.com> 135def4c47SEmmanuel Vadot - Supreeth Venkatesh <supreeth.venkatesh@amd.com> 145def4c47SEmmanuel Vadot 155def4c47SEmmanuel Vadotdescription: | 165def4c47SEmmanuel Vadot SB Temperature Sensor Interface (SB-TSI) is an SMBus compatible 175def4c47SEmmanuel Vadot interface that reports AMD SoC's Ttcl (normalized temperature), 185def4c47SEmmanuel Vadot and resembles a typical 8-pin remote temperature sensor's I2C interface 195def4c47SEmmanuel Vadot to BMC. The emulated thermal sensor can report temperatures in increments 205def4c47SEmmanuel Vadot of 0.125 degrees, ranging from 0 to 255.875. 215def4c47SEmmanuel Vadot 225def4c47SEmmanuel Vadotproperties: 235def4c47SEmmanuel Vadot compatible: 245def4c47SEmmanuel Vadot enum: 255def4c47SEmmanuel Vadot - amd,sbtsi 265def4c47SEmmanuel Vadot 275def4c47SEmmanuel Vadot reg: 285def4c47SEmmanuel Vadot maxItems: 1 295def4c47SEmmanuel Vadot description: | 305def4c47SEmmanuel Vadot I2C bus address of the device as specified in Section 6.3.1 of the 315def4c47SEmmanuel Vadot SoC register reference. The SB-TSI address is normally 98h for socket 325def4c47SEmmanuel Vadot 0 and 90h for socket 1, but it could vary based on hardware address 335def4c47SEmmanuel Vadot select pins. 345def4c47SEmmanuel Vadot \[open source SoC register reference\] 355def4c47SEmmanuel Vadot https://www.amd.com/system/files/TechDocs/56255_OSRR.pdf 365def4c47SEmmanuel Vadot 375def4c47SEmmanuel Vadotrequired: 385def4c47SEmmanuel Vadot - compatible 395def4c47SEmmanuel Vadot - reg 405def4c47SEmmanuel Vadot 415def4c47SEmmanuel VadotadditionalProperties: false 425def4c47SEmmanuel Vadot 435def4c47SEmmanuel Vadotexamples: 445def4c47SEmmanuel Vadot - | 45*cb7aa33aSEmmanuel Vadot i2c { 465def4c47SEmmanuel Vadot #address-cells = <1>; 475def4c47SEmmanuel Vadot #size-cells = <0>; 485def4c47SEmmanuel Vadot 495def4c47SEmmanuel Vadot sbtsi@4c { 505def4c47SEmmanuel Vadot compatible = "amd,sbtsi"; 515def4c47SEmmanuel Vadot reg = <0x4c>; 525def4c47SEmmanuel Vadot }; 535def4c47SEmmanuel Vadot }; 545def4c47SEmmanuel Vadot... 55