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Diffstat (limited to 'Documentation/devicetree/bindings/hwmon')
31 files changed, 1038 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/hwmon/adc128d818.txt b/Documentation/devicetree/bindings/hwmon/adc128d818.txt new file mode 100644 index 000000000..08bab0e94 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/adc128d818.txt @@ -0,0 +1,38 @@ +TI ADC128D818 ADC System Monitor With Temperature Sensor +-------------------------------------------------------- + +Operation modes: + + - Mode 0: 7 single-ended voltage readings (IN0-IN6), + 1 temperature reading (internal) + - Mode 1: 8 single-ended voltage readings (IN0-IN7), + no temperature + - Mode 2: 4 pseudo-differential voltage readings + (IN0-IN1, IN3-IN2, IN4-IN5, IN7-IN6), + 1 temperature reading (internal) + - Mode 3: 4 single-ended voltage readings (IN0-IN3), + 2 pseudo-differential voltage readings + (IN4-IN5, IN7-IN6), + 1 temperature reading (internal) + +If no operation mode is configured via device tree, the driver keeps the +currently active chip operation mode (default is mode 0). + + +Required node properties: + + - compatible: must be set to "ti,adc128d818" + - reg: I2C address of the device + +Optional node properties: + + - ti,mode: Operation mode (see above). + + +Example (operation mode 2): + + adc128d818@1d { + compatible = "ti,adc128d818"; + reg = <0x1d>; + ti,mode = <2>; + }; diff --git a/Documentation/devicetree/bindings/hwmon/ads1015.txt b/Documentation/devicetree/bindings/hwmon/ads1015.txt new file mode 100644 index 000000000..918a507d1 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ads1015.txt @@ -0,0 +1,73 @@ +ADS1015 (I2C) + +This device is a 12-bit A-D converter with 4 inputs. + +The inputs can be used single ended or in certain differential combinations. + +For configuration all possible combinations are mapped to 8 channels: + 0: Voltage over AIN0 and AIN1. + 1: Voltage over AIN0 and AIN3. + 2: Voltage over AIN1 and AIN3. + 3: Voltage over AIN2 and AIN3. + 4: Voltage over AIN0 and GND. + 5: Voltage over AIN1 and GND. + 6: Voltage over AIN2 and GND. + 7: Voltage over AIN3 and GND. + +Each channel can be configured individually: + - pga is the programmable gain amplifier (values are full scale) + 0: +/- 6.144 V + 1: +/- 4.096 V + 2: +/- 2.048 V (default) + 3: +/- 1.024 V + 4: +/- 0.512 V + 5: +/- 0.256 V + - data_rate in samples per second + 0: 128 + 1: 250 + 2: 490 + 3: 920 + 4: 1600 (default) + 5: 2400 + 6: 3300 + +1) The /ads1015 node + + Required properties: + + - compatible : must be "ti,ads1015" + - reg : I2C bus address of the device + - #address-cells : must be <1> + - #size-cells : must be <0> + + The node contains child nodes for each channel that the platform uses. + + Example ADS1015 node: + + ads1015@49 { + compatible = "ti,ads1015"; + reg = <0x49>; + #address-cells = <1>; + #size-cells = <0>; + + [ child node definitions... ] + } + +2) channel nodes + + Required properties: + + - reg : the channel number + + Optional properties: + + - ti,gain : the programmable gain amplifier setting + - ti,datarate : the converter data rate + + Example ADS1015 channel node: + + channel@4 { + reg = <4>; + ti,gain = <3>; + ti,datarate = <5>; + }; diff --git a/Documentation/devicetree/bindings/hwmon/ads7828.txt b/Documentation/devicetree/bindings/hwmon/ads7828.txt new file mode 100644 index 000000000..fe0cc4ad7 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ads7828.txt @@ -0,0 +1,25 @@ +ads7828 properties + +Required properties: +- compatible: Should be one of + ti,ads7828 + ti,ads7830 +- reg: I2C address + +Optional properties: + +- ti,differential-input + Set to use the device in differential mode. +- vref-supply + The external reference on the device is set to this regulators output. If it + does not exists the internal reference will be used and output by the ads78xx + on the "external vref" pin. + + Example ADS7828 node: + + ads7828: ads@48 { + comatible = "ti,ads7828"; + reg = <0x48>; + vref-supply = <&vref>; + ti,differential-input; + }; diff --git a/Documentation/devicetree/bindings/hwmon/apm-xgene-hwmon.txt b/Documentation/devicetree/bindings/hwmon/apm-xgene-hwmon.txt new file mode 100644 index 000000000..59b38557f --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/apm-xgene-hwmon.txt @@ -0,0 +1,14 @@ +APM X-Gene hwmon driver + +APM X-Gene SOC sensors are accessed over the "SLIMpro" mailbox. + +Required properties : + - compatible : should be "apm,xgene-slimpro-hwmon" + - mboxes : use the label reference for the mailbox as the first parameter. + The second parameter is the channel number. + +Example : + hwmonslimpro { + compatible = "apm,xgene-slimpro-hwmon"; + mboxes = <&mailbox 7>; + }; diff --git a/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt b/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt new file mode 100644 index 000000000..3ac02988a --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt @@ -0,0 +1,73 @@ +ASPEED AST2400/AST2500 PWM and Fan Tacho controller device driver + +The ASPEED PWM controller can support upto 8 PWM outputs. The ASPEED Fan Tacho +controller can support upto 16 Fan tachometer inputs. + +There can be upto 8 fans supported. Each fan can have one PWM output and +one/two Fan tach inputs. + +Required properties for pwm-tacho node: +- #address-cells : should be 1. + +- #size-cells : should be 1. + +- #cooling-cells: should be 2. + +- reg : address and length of the register set for the device. + +- pinctrl-names : a pinctrl state named "default" must be defined. + +- pinctrl-0 : phandle referencing pin configuration of the PWM ports. + +- compatible : should be "aspeed,ast2400-pwm-tacho" for AST2400 and + "aspeed,ast2500-pwm-tacho" for AST2500. + +- clocks : phandle to clock provider with the clock number in the second cell + +- resets : phandle to reset controller with the reset number in the second cell + +fan subnode format: +=================== +Under fan subnode there can upto 8 child nodes, with each child node +representing a fan. If there are 8 fans each fan can have one PWM port and +one/two Fan tach inputs. +For PWM port can be configured cooling-levels to create cooling device. +Cooling device could be bound to a thermal zone for the thermal control. + +Required properties for each child node: +- reg : should specify PWM source port. + integer value in the range 0 to 7 with 0 indicating PWM port A and + 7 indicating PWM port H. + +- cooling-levels: PWM duty cycle values in a range from 0 to 255 + which correspond to thermal cooling states. + +- aspeed,fan-tach-ch : should specify the Fan tach input channel. + integer value in the range 0 through 15, with 0 indicating + Fan tach channel 0 and 15 indicating Fan tach channel 15. + Atleast one Fan tach input channel is required. + +Examples: + +pwm_tacho: pwmtachocontroller@1e786000 { + #address-cells = <1>; + #size-cells = <1>; + #cooling-cells = <2>; + reg = <0x1E786000 0x1000>; + compatible = "aspeed,ast2500-pwm-tacho"; + clocks = <&syscon ASPEED_CLK_APB>; + resets = <&syscon ASPEED_RESET_PWM>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pwm0_default &pinctrl_pwm1_default>; + + fan@0 { + reg = <0x00>; + cooling-levels = /bits/ 8 <125 151 177 203 229 255>; + aspeed,fan-tach-ch = /bits/ 8 <0x00>; + }; + + fan@1 { + reg = <0x01>; + aspeed,fan-tach-ch = /bits/ 8 <0x01 0x02>; + }; +}; diff --git a/Documentation/devicetree/bindings/hwmon/g762.txt b/Documentation/devicetree/bindings/hwmon/g762.txt new file mode 100644 index 000000000..25cc6d8ee --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/g762.txt @@ -0,0 +1,47 @@ +GMT G762/G763 PWM Fan controller + +Required node properties: + + - "compatible": must be either "gmt,g762" or "gmt,g763" + - "reg": I2C bus address of the device + - "clocks": a fixed clock providing input clock frequency + on CLK pin of the chip. + +Optional properties: + + - "fan_startv": fan startup voltage. Accepted values are 0, 1, 2 and 3. + The higher the more. + + - "pwm_polarity": pwm polarity. Accepted values are 0 (positive duty) + and 1 (negative duty). + + - "fan_gear_mode": fan gear mode. Supported values are 0, 1 and 2. + +If an optional property is not set in .dts file, then current value is kept +unmodified (e.g. u-boot installed value). + +Additional information on operational parameters for the device is available +in Documentation/hwmon/g762. A detailed datasheet for the device is available +at http://natisbad.org/NAS/refs/GMT_EDS-762_763-080710-0.2.pdf. + +Example g762 node: + + clocks { + #address-cells = <1>; + #size-cells = <0>; + + g762_clk: fixedclk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <8192>; + } + } + + g762: g762@3e { + compatible = "gmt,g762"; + reg = <0x3e>; + clocks = <&g762_clk> + fan_gear_mode = <0>; /* chip default */ + fan_startv = <1>; /* chip default */ + pwm_polarity = <0>; /* chip default */ + }; diff --git a/Documentation/devicetree/bindings/hwmon/gpio-fan.txt b/Documentation/devicetree/bindings/hwmon/gpio-fan.txt new file mode 100644 index 000000000..2becdcfdc --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/gpio-fan.txt @@ -0,0 +1,40 @@ +Bindings for fan connected to GPIO lines + +Required properties: +- compatible : "gpio-fan" + +Optional properties: +- gpios: Specifies the pins that map to bits in the control value, + ordered MSB-->LSB. +- gpio-fan,speed-map: A mapping of possible fan RPM speeds and the + control value that should be set to achieve them. This array + must have the RPM values in ascending order. +- alarm-gpios: This pin going active indicates something is wrong with + the fan, and a udev event will be fired. +- #cooling-cells: If used as a cooling device, must be <2> + Also see: Documentation/devicetree/bindings/thermal/thermal.txt + min and max states are derived from the speed-map of the fan. + +Note: At least one the "gpios" or "alarm-gpios" properties must be set. + +Examples: + + gpio_fan { + compatible = "gpio-fan"; + gpios = <&gpio1 14 1 + &gpio1 13 1>; + gpio-fan,speed-map = <0 0 + 3000 1 + 6000 2>; + alarm-gpios = <&gpio1 15 1>; + }; + gpio_fan_cool: gpio_fan { + compatible = "gpio-fan"; + gpios = <&gpio2 14 1 + &gpio2 13 1>; + gpio-fan,speed-map = <0 0>, + <3000 1>, + <6000 2>; + alarm-gpios = <&gpio2 15 1>; + #cooling-cells = <2>; /* min followed by max */ + }; diff --git a/Documentation/devicetree/bindings/hwmon/ibm,cffps1.txt b/Documentation/devicetree/bindings/hwmon/ibm,cffps1.txt new file mode 100644 index 000000000..f68a0a68f --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ibm,cffps1.txt @@ -0,0 +1,21 @@ +Device-tree bindings for IBM Common Form Factor Power Supply Version 1 +---------------------------------------------------------------------- + +Required properties: + - compatible = "ibm,cffps1"; + - reg = < I2C bus address >; : Address of the power supply on the + I2C bus. + +Example: + + i2c-bus@100 { + #address-cells = <1>; + #size-cells = <0>; + #interrupt-cells = <1>; + < more properties > + + power-supply@68 { + compatible = "ibm,cffps1"; + reg = <0x68>; + }; + }; diff --git a/Documentation/devicetree/bindings/hwmon/ibmpowernv.txt b/Documentation/devicetree/bindings/hwmon/ibmpowernv.txt new file mode 100644 index 000000000..f93242be6 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ibmpowernv.txt @@ -0,0 +1,23 @@ +IBM POWERNV platform sensors +---------------------------- + +Required node properties: +- compatible: must be one of + "ibm,opal-sensor-cooling-fan" + "ibm,opal-sensor-amb-temp" + "ibm,opal-sensor-power-supply" + "ibm,opal-sensor-power" +- sensor-id: an opaque id provided by the firmware to the kernel, identifies a + given sensor and its attribute data + +Example sensors node: + +cooling-fan#8-data { + sensor-id = <0x7052107>; + compatible = "ibm,opal-sensor-cooling-fan"; +}; + +amb-temp#1-thrs { + sensor-id = <0x5096000>; + compatible = "ibm,opal-sensor-amb-temp"; +}; diff --git a/Documentation/devicetree/bindings/hwmon/ina2xx.txt b/Documentation/devicetree/bindings/hwmon/ina2xx.txt new file mode 100644 index 000000000..02af0d94e --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ina2xx.txt @@ -0,0 +1,24 @@ +ina2xx properties + +Required properties: +- compatible: Must be one of the following: + - "ti,ina209" for ina209 + - "ti,ina219" for ina219 + - "ti,ina220" for ina220 + - "ti,ina226" for ina226 + - "ti,ina230" for ina230 + - "ti,ina231" for ina231 +- reg: I2C address + +Optional properties: + +- shunt-resistor + Shunt resistor value in micro-Ohm + +Example: + +ina220@44 { + compatible = "ti,ina220"; + reg = <0x44>; + shunt-resistor = <1000>; +}; diff --git a/Documentation/devicetree/bindings/hwmon/jc42.txt b/Documentation/devicetree/bindings/hwmon/jc42.txt new file mode 100644 index 000000000..f569db58f --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/jc42.txt @@ -0,0 +1,46 @@ +Properties for Jedec JC-42.4 compatible temperature sensors + +Required properties: +- compatible: May include a device-specific string consisting of the + manufacturer and the name of the chip. A list of supported + chip names follows. + Must include "jedec,jc-42.4-temp" for any Jedec JC-42.4 + compatible temperature sensor. + + Supported chip names: + adi,adt7408 + atmel,at30ts00 + atmel,at30tse004 + onnn,cat6095 + onnn,cat34ts02 + maxim,max6604 + microchip,mcp9804 + microchip,mcp9805 + microchip,mcp9808 + microchip,mcp98243 + microchip,mcp98244 + microchip,mcp9843 + nxp,se97 + nxp,se98 + st,stts2002 + st,stts2004 + st,stts3000 + st,stts424 + st,stts424e + idt,tse2002 + idt,tse2004 + idt,ts3000 + idt,ts3001 + +- reg: I2C address + +Optional properties: +- smbus-timeout-disable: When set, the smbus timeout function will be disabled. + This is not supported on all chips. + +Example: + +temp-sensor@1a { + compatible = "jedec,jc-42.4-temp"; + reg = <0x1a>; +}; diff --git a/Documentation/devicetree/bindings/hwmon/lm70.txt b/Documentation/devicetree/bindings/hwmon/lm70.txt new file mode 100644 index 000000000..ea417a0d3 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/lm70.txt @@ -0,0 +1,22 @@ +* LM70/TMP121/LM71/LM74 thermometer. + +Required properties: +- compatible: one of + "ti,lm70" + "ti,tmp121" + "ti,tmp122" + "ti,lm71" + "ti,lm74" + +See Documentation/devicetree/bindings/spi/spi-bus.txt for more required and +optional properties. + +Example: + +spi_master { + temperature-sensor@0 { + compatible = "ti,lm70"; + reg = <0>; + spi-max-frequency = <1000000>; + }; +}; diff --git a/Documentation/devicetree/bindings/hwmon/lm87.txt b/Documentation/devicetree/bindings/hwmon/lm87.txt new file mode 100644 index 000000000..e1b79903f --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/lm87.txt @@ -0,0 +1,30 @@ +*LM87 hwmon sensor. + +Required properties: +- compatible: Should be + "ti,lm87" + +- reg: I2C address + +optional properties: +- has-temp3: This configures pins 18 and 19 to be used as a second + remote temperature sensing channel. By default the pins + are configured as voltage input pins in0 and in5. + +- has-in6: When set, pin 5 is configured to be used as voltage input + in6. Otherwise the pin is set as FAN1 input. + +- has-in7: When set, pin 6 is configured to be used as voltage input + in7. Otherwise the pin is set as FAN2 input. + +- vcc-supply: a Phandle for the regulator supplying power, can be + cofigured to measure 5.0V power supply. Default is 3.3V. + +Example: + +lm87@2e { + compatible = "ti,lm87"; + reg = <0x2e>; + has-temp3; + vcc-supply = <®_5v0>; +}; diff --git a/Documentation/devicetree/bindings/hwmon/lm90.txt b/Documentation/devicetree/bindings/hwmon/lm90.txt new file mode 100644 index 000000000..97581266e --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/lm90.txt @@ -0,0 +1,50 @@ +* LM90 series thermometer. + +Required node properties: +- compatible: manufacturer and chip name, one of + "adi,adm1032" + "adi,adt7461" + "adi,adt7461a" + "gmt,g781" + "national,lm90" + "national,lm86" + "national,lm89" + "national,lm99" + "dallas,max6646" + "dallas,max6647" + "dallas,max6649" + "dallas,max6657" + "dallas,max6658" + "dallas,max6659" + "dallas,max6680" + "dallas,max6681" + "dallas,max6695" + "dallas,max6696" + "onnn,nct1008" + "winbond,w83l771" + "nxp,sa56004" + +- reg: I2C bus address of the device + +- vcc-supply: vcc regulator for the supply voltage. + +Optional properties: +- interrupts: Contains a single interrupt specifier which describes the + LM90 "-ALERT" pin output. + See interrupt-controller/interrupts.txt for the format. + +- #thermal-sensor-cells: should be set to 1. See thermal/thermal.txt for + details. See <include/dt-bindings/thermal/lm90.h> for the + definition of the local, remote and 2nd remote sensor index + constants. + +Example LM90 node: + +temp-sensor { + compatible = "onnn,nct1008"; + reg = <0x4c>; + vcc-supply = <&palmas_ldo6_reg>; + interrupt-parent = <&gpio>; + interrupts = <TEGRA_GPIO(O, 4) IRQ_TYPE_LEVEL_LOW>; + #thermal-sensor-cells = <1>; +} diff --git a/Documentation/devicetree/bindings/hwmon/ltc2978.txt b/Documentation/devicetree/bindings/hwmon/ltc2978.txt new file mode 100644 index 000000000..bf2a47bbd --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ltc2978.txt @@ -0,0 +1,46 @@ +ltc2978 + +Required properties: +- compatible: should contain one of: + * "lltc,ltc2974" + * "lltc,ltc2975" + * "lltc,ltc2977" + * "lltc,ltc2978" + * "lltc,ltc2980" + * "lltc,ltc3880" + * "lltc,ltc3882" + * "lltc,ltc3883" + * "lltc,ltc3886" + * "lltc,ltc3887" + * "lltc,ltm2987" + * "lltc,ltm4675" + * "lltc,ltm4676" +- reg: I2C slave address + +Optional properties: +- regulators: A node that houses a sub-node for each regulator controlled by + the device. Each sub-node is identified using the node's name, with valid + values listed below. The content of each sub-node is defined by the + standard binding for regulators; see regulator.txt. + +Valid names of regulators depend on number of supplies supported per device: + * ltc2974, ltc2975 : vout0 - vout3 + * ltc2977, ltc2980, ltm2987 : vout0 - vout7 + * ltc2978 : vout0 - vout7 + * ltc3880, ltc3882, ltc3886 : vout0 - vout1 + * ltc3883 : vout0 + * ltm4676 : vout0 - vout1 + +Example: +ltc2978@5e { + compatible = "lltc,ltc2978"; + reg = <0x5e>; + regulators { + vout0 { + regulator-name = "FPGA-2.5V"; + }; + vout2 { + regulator-name = "FPGA-1.5V"; + }; + }; +}; diff --git a/Documentation/devicetree/bindings/hwmon/ltc2990.txt b/Documentation/devicetree/bindings/hwmon/ltc2990.txt new file mode 100644 index 000000000..f92f54029 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ltc2990.txt @@ -0,0 +1,36 @@ +ltc2990: Linear Technology LTC2990 power monitor + +Required properties: +- compatible: Must be "lltc,ltc2990" +- reg: I2C slave address +- lltc,meas-mode: + An array of two integers for configuring the chip measurement mode. + + The first integer defines the bits 2..0 in the control register. In all + cases the internal temperature and supply voltage are measured. In + addition the following input measurements are enabled per mode: + + 0: V1, V2, TR2 + 1: V1-V2, TR2 + 2: V1-V2, V3, V4 + 3: TR1, V3, V4 + 4: TR1, V3-V4 + 5: TR1, TR2 + 6: V1-V2, V3-V4 + 7: V1, V2, V3, V4 + + The second integer defines the bits 4..3 in the control register. This + allows a subset of the measurements to be enabled: + + 0: Internal temperature and supply voltage only + 1: TR1, V1 or V1-V2 only per mode + 2: TR2, V3 or V3-V4 only per mode + 3: All measurements per mode + +Example: + +ltc2990@4c { + compatible = "lltc,ltc2990"; + reg = <0x4c>; + lltc,meas-mode = <7 3>; /* V1, V2, V3, V4 */ +}; diff --git a/Documentation/devicetree/bindings/hwmon/ltc4151.txt b/Documentation/devicetree/bindings/hwmon/ltc4151.txt new file mode 100644 index 000000000..d008a5ef5 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ltc4151.txt @@ -0,0 +1,18 @@ +LTC4151 High Voltage I2C Current and Voltage Monitor + +Required properties: +- compatible: Must be "lltc,ltc4151" +- reg: I2C address + +Optional properties: +- shunt-resistor-micro-ohms + Shunt resistor value in micro-Ohms + Defaults to <1000> if unset. + +Example: + +ltc4151@6e { + compatible = "lltc,ltc4151"; + reg = <0x6e>; + shunt-resistor-micro-ohms = <1500>; +}; diff --git a/Documentation/devicetree/bindings/hwmon/ltq-cputemp.txt b/Documentation/devicetree/bindings/hwmon/ltq-cputemp.txt new file mode 100644 index 000000000..33fd00a98 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ltq-cputemp.txt @@ -0,0 +1,10 @@ +Lantiq cpu temperatur sensor + +Requires node properties: +- compatible value : + "lantiq,cputemp" + +Example: + cputemp@0 { + compatible = "lantiq,cputemp"; + }; diff --git a/Documentation/devicetree/bindings/hwmon/max1619.txt b/Documentation/devicetree/bindings/hwmon/max1619.txt new file mode 100644 index 000000000..c70dbbe1e --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/max1619.txt @@ -0,0 +1,12 @@ +Bindings for MAX1619 Temperature Sensor + +Required properties: +- compatible : "maxim,max1619" +- reg : I2C address, one of 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, or + 0x4d, 0x4e + +Example: + temp@4c { + compatible = "maxim,max1619"; + reg = <0x4c>; + }; diff --git a/Documentation/devicetree/bindings/hwmon/max31785.txt b/Documentation/devicetree/bindings/hwmon/max31785.txt new file mode 100644 index 000000000..106e08c56 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/max31785.txt @@ -0,0 +1,22 @@ +Bindings for the Maxim MAX31785 Intelligent Fan Controller +========================================================== + +Reference: + +https://datasheets.maximintegrated.com/en/ds/MAX31785.pdf + +The Maxim MAX31785 is a PMBus device providing closed-loop, multi-channel fan +management with temperature and remote voltage sensing. Various fan control +features are provided, including PWM frequency control, temperature hysteresis, +dual tachometer measurements, and fan health monitoring. + +Required properties: +- compatible : One of "maxim,max31785" or "maxim,max31785a" +- reg : I2C address, one of 0x52, 0x53, 0x54, 0x55. + +Example: + + fans@52 { + compatible = "maxim,max31785"; + reg = <0x52>; + }; diff --git a/Documentation/devicetree/bindings/hwmon/max6650.txt b/Documentation/devicetree/bindings/hwmon/max6650.txt new file mode 100644 index 000000000..f6bd87d8e --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/max6650.txt @@ -0,0 +1,28 @@ +Bindings for MAX6651 and MAX6650 I2C fan controllers + +Reference: +[1] https://datasheets.maximintegrated.com/en/ds/MAX6650-MAX6651.pdf + +Required properties: +- compatible : One of "maxim,max6650" or "maxim,max6651" +- reg : I2C address, one of 0x1b, 0x1f, 0x4b, 0x48. + +Optional properties, default is to retain the chip's current setting: +- maxim,fan-microvolt : The supply voltage of the fan, either 5000000 uV or + 12000000 uV. +- maxim,fan-prescale : Pre-scaling value, as per datasheet [1]. Lower values + allow more fine-grained control of slower fans. + Valid: 1, 2, 4, 8, 16. +- maxim,fan-target-rpm: Initial requested fan rotation speed. If specified, the + driver selects closed-loop mode and the requested speed. + This ensures the fan is already running before userspace + takes over. + +Example: + fan-max6650: max6650@1b { + reg = <0x1b>; + compatible = "maxim,max6650"; + maxim,fan-microvolt = <12000000>; + maxim,fan-prescale = <4>; + maxim,fan-target-rpm = <1200>; + }; diff --git a/Documentation/devicetree/bindings/hwmon/max6697.txt b/Documentation/devicetree/bindings/hwmon/max6697.txt new file mode 100644 index 000000000..5f793998e --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/max6697.txt @@ -0,0 +1,64 @@ +max6697 properties + +Required properties: +- compatible: + Should be one of + maxim,max6581 + maxim,max6602 + maxim,max6622 + maxim,max6636 + maxim,max6689 + maxim,max6693 + maxim,max6694 + maxim,max6697 + maxim,max6698 + maxim,max6699 +- reg: I2C address + +Optional properties: + +- smbus-timeout-disable + Set to disable SMBus timeout. If not specified, SMBus timeout will be + enabled. +- extended-range-enable + Only valid for MAX6581. Set to enable extended temperature range. + Extended temperature will be disabled if not specified. +- beta-compensation-enable + Only valid for MAX6693 and MX6694. Set to enable beta compensation on + remote temperature channel 1. + Beta compensation will be disabled if not specified. +- alert-mask + Alert bit mask. Alert disabled for bits set. + Select bit 0 for local temperature, bit 1..7 for remote temperatures. + If not specified, alert will be enabled for all channels. +- over-temperature-mask + Over-temperature bit mask. Over-temperature reporting disabled for + bits set. + Select bit 0 for local temperature, bit 1..7 for remote temperatures. + If not specified, over-temperature reporting will be enabled for all + channels. +- resistance-cancellation + Boolean for all chips other than MAX6581. Set to enable resistance + cancellation on remote temperature channel 1. + For MAX6581, resistance cancellation enabled for all channels if + specified as boolean, otherwise as per bit mask specified. + Only supported for remote temperatures (bit 1..7). + If not specified, resistance cancellation will be disabled for all + channels. +- transistor-ideality + For MAX6581 only. Two values; first is bit mask, second is ideality + select value as per MAX6581 data sheet. Select bit 1..7 for remote + channels. + Transistor ideality will be initialized to default (1.008) if not + specified. + +Example: + +temp-sensor@1a { + compatible = "maxim,max6697"; + reg = <0x1a>; + smbus-timeout-disable; + resistance-cancellation; + alert-mask = <0x72>; + over-temperature-mask = <0x7f>; +}; diff --git a/Documentation/devicetree/bindings/hwmon/mcp3021.txt b/Documentation/devicetree/bindings/hwmon/mcp3021.txt new file mode 100644 index 000000000..294318ba6 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/mcp3021.txt @@ -0,0 +1,21 @@ +mcp3021 properties + +Required properties: +- compatible: Must be one of the following: + - "microchip,mcp3021" for mcp3021 + - "microchip,mcp3221" for mcp3221 +- reg: I2C address + +Optional properties: + +- reference-voltage-microvolt + Reference voltage in microvolt (uV) + +Example: + +mcp3021@4d { + compatible = "microchip,mcp3021"; + reg = <0x4d>; + + reference-voltage-microvolt = <4500000>; /* 4.5 V */ +}; diff --git a/Documentation/devicetree/bindings/hwmon/npcm750-pwm-fan.txt b/Documentation/devicetree/bindings/hwmon/npcm750-pwm-fan.txt new file mode 100644 index 000000000..28f43e929 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/npcm750-pwm-fan.txt @@ -0,0 +1,84 @@ +Nuvoton NPCM7xx PWM and Fan Tacho controller device + +The Nuvoton BMC NPCM7XX supports 8 Pulse-width modulation (PWM) +controller outputs and 16 Fan tachometer controller inputs. + +Required properties for pwm-fan node +- #address-cells : should be 1. +- #size-cells : should be 0. +- compatible : "nuvoton,npcm750-pwm-fan" for Poleg NPCM7XX. +- reg : specifies physical base address and size of the registers. +- reg-names : must contain: + * "pwm" for the PWM registers. + * "fan" for the Fan registers. +- clocks : phandle of reference clocks. +- clock-names : must contain + * "pwm" for PWM controller operating clock. + * "fan" for Fan controller operating clock. +- interrupts : contain the Fan interrupts with flags for falling edge. +- pinctrl-names : a pinctrl state named "default" must be defined. +- pinctrl-0 : phandle referencing pin configuration of the PWM and Fan + controller ports. + +fan subnode format: +=================== +Under fan subnode can be upto 8 child nodes, each child node representing a fan. +Each fan subnode must have one PWM channel and atleast one Fan tach channel. + +For PWM channel can be configured cooling-levels to create cooling device. +Cooling device could be bound to a thermal zone for the thermal control. + +Required properties for each child node: +- reg : specify the PWM output channel. + integer value in the range 0 through 7, that represent + the PWM channel number that used. + +- fan-tach-ch : specify the Fan tach input channel. + integer value in the range 0 through 15, that represent + the fan tach channel number that used. + + At least one Fan tach input channel is required + +Optional property for each child node: +- cooling-levels: PWM duty cycle values in a range from 0 to 255 + which correspond to thermal cooling states. + +Examples: + +pwm_fan:pwm-fan-controller@103000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "nuvoton,npcm750-pwm-fan"; + reg = <0x103000 0x2000>, + <0x180000 0x8000>; + reg-names = "pwm", "fan"; + clocks = <&clk NPCM7XX_CLK_APB3>, + <&clk NPCM7XX_CLK_APB4>; + clock-names = "pwm","fan"; + interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>; + pinctrl-names = "default"; + pinctrl-0 = <&pwm0_pins &pwm1_pins &pwm2_pins + &fanin0_pins &fanin1_pins &fanin2_pins + &fanin3_pins &fanin4_pins>; + fan@0 { + reg = <0x00>; + fan-tach-ch = /bits/ 8 <0x00 0x01>; + cooling-levels = <127 255>; + }; + fan@1 { + reg = <0x01>; + fan-tach-ch = /bits/ 8 <0x02 0x03>; + }; + fan@2 { + reg = <0x02>; + fan-tach-ch = /bits/ 8 <0x04>; + }; + +}; diff --git a/Documentation/devicetree/bindings/hwmon/nsa320-mcu.txt b/Documentation/devicetree/bindings/hwmon/nsa320-mcu.txt new file mode 100644 index 000000000..0863e067c --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/nsa320-mcu.txt @@ -0,0 +1,20 @@ +Bindings for the fan / temperature monitor microcontroller used on +the Zyxel NSA 320 and several subsequent models. + +Required properties: +- compatible : "zyxel,nsa320-mcu" +- data-gpios : The GPIO pin connected to the data line on the MCU +- clk-gpios : The GPIO pin connected to the clock line on the MCU +- act-gpios : The GPIO pin connected to the active line on the MCU + +Example: + + hwmon { + compatible = "zyxel,nsa320-mcu"; + pinctrl-0 = <&pmx_mcu_data &pmx_mcu_clk &pmx_mcu_act>; + pinctrl-names = "default"; + + data-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>; + clk-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>; + act-gpios = <&gpio0 17 GPIO_ACTIVE_LOW>; + }; diff --git a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt new file mode 100644 index 000000000..c3b9c4cfe --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt @@ -0,0 +1,43 @@ +NTC Thermistor hwmon sensors +------------------------------- + +Requires node properties: +- "compatible" value : one of + "epcos,b57330v2103" + "murata,ncp15wb473" + "murata,ncp18wb473" + "murata,ncp21wb473" + "murata,ncp03wb473" + "murata,ncp15wl333" + "murata,ncp03wf104" + "murata,ncp15xh103" + +/* Usage of vendor name "ntc" is deprecated */ +<DEPRECATED> "ntc,ncp15wb473" +<DEPRECATED> "ntc,ncp18wb473" +<DEPRECATED> "ntc,ncp21wb473" +<DEPRECATED> "ntc,ncp03wb473" +<DEPRECATED> "ntc,ncp15wl333" + +- "pullup-uv" Pull up voltage in micro volts +- "pullup-ohm" Pull up resistor value in ohms +- "pulldown-ohm" Pull down resistor value in ohms +- "connected-positive" Always ON, If not specified. + Status change is possible. +- "io-channels" Channel node of ADC to be used for + conversion. + +Optional node properties: +- "#thermal-sensor-cells" Used to expose itself to thermal fw. + +Read more about iio bindings at + Documentation/devicetree/bindings/iio/iio-bindings.txt + +Example: + ncp15wb473@0 { + compatible = "murata,ncp15wb473"; + pullup-uv = <1800000>; + pullup-ohm = <47000>; + pulldown-ohm = <0>; + io-channels = <&adc 3>; + }; diff --git a/Documentation/devicetree/bindings/hwmon/pwm-fan.txt b/Documentation/devicetree/bindings/hwmon/pwm-fan.txt new file mode 100644 index 000000000..c6d533202 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/pwm-fan.txt @@ -0,0 +1,37 @@ +Bindings for a fan connected to the PWM lines + +Required properties: +- compatible : "pwm-fan" +- pwms : the PWM that is used to control the PWM fan +- cooling-levels : PWM duty cycle values in a range from 0 to 255 + which correspond to thermal cooling states + +Example: + fan0: pwm-fan { + compatible = "pwm-fan"; + cooling-min-state = <0>; + cooling-max-state = <3>; + #cooling-cells = <2>; + pwms = <&pwm 0 10000 0>; + cooling-levels = <0 102 170 230>; + }; + + thermal-zones { + cpu_thermal: cpu-thermal { + thermal-sensors = <&tmu 0>; + polling-delay-passive = <0>; + polling-delay = <0>; + trips { + cpu_alert1: cpu-alert1 { + temperature = <100000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "passive"; + }; + }; + cooling-maps { + map0 { + trip = <&cpu_alert1>; + cooling-device = <&fan0 0 1>; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/hwmon/sht15.txt b/Documentation/devicetree/bindings/hwmon/sht15.txt new file mode 100644 index 000000000..6a80277cc --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/sht15.txt @@ -0,0 +1,19 @@ +Sensirion SHT15 Humidity and Temperature Sensor + +Required properties: + + - "compatible": must be "sensirion,sht15". + - "data-gpios": GPIO connected to the data line. + - "clk-gpios": GPIO connected to the clock line. + - "vcc-supply": regulator that drives the VCC pin. + +Example: + + sensor { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_sensor>; + compatible = "sensirion,sht15"; + clk-gpios = <&gpio4 12 0>; + data-gpios = <&gpio4 13 0>; + vcc-supply = <®_sht15>; + }; diff --git a/Documentation/devicetree/bindings/hwmon/stts751.txt b/Documentation/devicetree/bindings/hwmon/stts751.txt new file mode 100644 index 000000000..3ee1dc30e --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/stts751.txt @@ -0,0 +1,15 @@ +* STTS751 thermometer. + +Required node properties: +- compatible: "stts751" +- reg: I2C bus address of the device + +Optional properties: +- smbus-timeout-disable: when set, the smbus timeout function will be disabled + +Example stts751 node: + +temp-sensor { + compatible = "stts751"; + reg = <0x48>; +} diff --git a/Documentation/devicetree/bindings/hwmon/tmp108.txt b/Documentation/devicetree/bindings/hwmon/tmp108.txt new file mode 100644 index 000000000..8c4b10df8 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/tmp108.txt @@ -0,0 +1,14 @@ +TMP108 temperature sensor +------------------------- + +This device supports I2C only. + +Requires node properties: +- compatible : "ti,tmp108" +- reg : the I2C address of the device. This is 0x48, 0x49, 0x4a, or 0x4b. + +Example: + tmp108@48 { + compatible = "ti,tmp108"; + reg = <0x48>; + }; diff --git a/Documentation/devicetree/bindings/hwmon/vexpress.txt b/Documentation/devicetree/bindings/hwmon/vexpress.txt new file mode 100644 index 000000000..9c27ed694 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/vexpress.txt @@ -0,0 +1,23 @@ +Versatile Express hwmon sensors +------------------------------- + +Requires node properties: +- "compatible" value : one of + "arm,vexpress-volt" + "arm,vexpress-amp" + "arm,vexpress-temp" + "arm,vexpress-power" + "arm,vexpress-energy" +- "arm,vexpress-sysreg,func" when controlled via vexpress-sysreg + (see Documentation/devicetree/bindings/arm/vexpress-sysreg.txt + for more details) + +Optional node properties: +- label : string describing the monitored value + +Example: + energy@0 { + compatible = "arm,vexpress-energy"; + arm,vexpress-sysreg,func = <13 0>; + label = "A15 Jcore"; + }; |