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Diffstat (limited to 'Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml | 97 |
1 files changed, 95 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml b/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml index b79f069a04c2..d0d549749208 100644 --- a/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml +++ b/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml @@ -9,6 +9,32 @@ title: Moortec Semiconductor MR75203 PVT Controller bindings maintainers: - Rahul Tanwar <rtanwar@maxlinear.com> +description: | + A Moortec PVT (Process, Voltage, Temperature) monitoring logic design can + include many different units. + Such a design will usually consists of several Moortec's embedded analog IPs, + and a single Moortec controller (mr75203) to configure and control the IPs. + + Some of the Moortec's analog hard IPs that can be used in a design: + *) Temperature Sensor (TS) - used to monitor core temperature (e.g. mr74137). + *) Voltage Monitor (VM) - used to monitor voltage levels (e.g. mr74138). + *) Process Detector (PD) - used to assess silicon speed (e.g. mr74139). + *) Delay Chain - ring oscillator connected to the PD, used to measure IO + based transistors (e.g. mr76008 ring oscillator at 1.1V, mr76007 ring + oscillator at 1.8V). + *) Pre Scaler - provides divide-by-X scaling of input voltage, which can then + be presented for VM for measurement within its range (e.g. mr76006 - + divide by 2 pre-scaler). + + TS, VM & PD also include a digital interface, which consists of configuration + inputs and measurement outputs. + + Some of the units have number of series, each series can have slightly + different characteristics. + + The mr75203 binding describes configuration for the controller unit, but also + for some of the analog IPs. + properties: compatible: const: moortec,mr75203 @@ -44,13 +70,76 @@ properties: "#thermal-sensor-cells": const: 1 + moortec,vm-active-channels: + description: + Defines the number of channels per VM that are actually used and are + connected to some input source. + Maximum number of items - number of VMs. + Maximum value of each item - number of channels. + Minimum value of each item - 0 (which means entire VM sensor is not used). + $ref: /schemas/types.yaml#/definitions/uint8-array + + moortec,vm-pre-scaler-x2: + description: + Defines the channels that use a mr76006 pre-scaler to divide the input + source by 2. + The pre-scaler is used for input sources that exceed the VM input range. + The driver uses this information to present to the user with the actual + value of the voltage source. + For channels that are not listed, no pre-scaler is assumed. + Maximum number of items - total number of channels in all VMs. + Each channel should not appear more than once. + $ref: /schemas/types.yaml#/definitions/uint8-array + + moortec,ts-series: + description: + Definition of the temperature equation and coefficients that shall be + used to convert the digital output to value in milli-Celsius. + minimum: 5 + maximum: 6 + default: 5 + $ref: /schemas/types.yaml#/definitions/uint32 + + moortec,ts-coeff-g: + description: + G coefficient for temperature equation. + Default for series 5 = 60000 + Default for series 6 = 57400 + multipleOf: 1000 + minimum: 1000 + $ref: /schemas/types.yaml#/definitions/uint32 + + moortec,ts-coeff-h: + description: + H coefficient for temperature equation. + Default for series 5 = 200000 + Default for series 6 = 249400 + multipleOf: 1000 + minimum: 1000 + $ref: /schemas/types.yaml#/definitions/uint32 + + moortec,ts-coeff-cal5: + description: + cal5 coefficient for temperature equation. + Default for series 5 = 4094 + Default for series 6 = 4096 + minimum: 1 + $ref: /schemas/types.yaml#/definitions/uint32 + + moortec,ts-coeff-j: + description: + J coefficient for temperature equation. + Default for series 5 = -100 + Default for series 6 = 0 + multipleOf: 1000 + maximum: 0 + $ref: /schemas/types.yaml#/definitions/int32 + required: - compatible - reg - reg-names - - intel,vm-map - clocks - - resets - "#thermal-sensor-cells" additionalProperties: false @@ -67,5 +156,9 @@ examples: intel,vm-map = [03 01 04 ff ff]; clocks = <&osc0>; resets = <&rcu0 0x40 7>; + moortec,vm-active-channels = /bits/ 8 <0x10 0x05>; + moortec,vm-pre-scaler-x2 = /bits/ 8 <5 6 20>; + moortec,ts-coeff-g = <61400>; + moortec,ts-coeff-h = <253700>; #thermal-sensor-cells = <1>; }; |