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3d21a46093
json-schema versions draft7 and earlier have a weird behavior in that any keywords combined with a '$ref' are ignored (silently). The correct form was to put a '$ref' under an 'allOf'. This behavior is now changed in the 2019-09 json-schema spec and '$ref' can be mixed with other keywords. The json-schema library doesn't yet support this, but the tooling now does a fixup for this and either way works. This has been a constant source of review comments, so let's change this treewide so everyone copies the simpler syntax. Scripted with ruamel.yaml with some manual fixups. Some minor whitespace changes from the script. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Maxime Ripard <mripard@kernel.org> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-By: Vinod Koul <vkoul@kernel.org> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Wolfram Sang <wsa@the-dreams.de> # for I2C Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for-iio Reviewed-by: Stephen Boyd <sboyd@kernel.org> # clock Signed-off-by: Rob Herring <robh@kernel.org>
467 lines
14 KiB
YAML
467 lines
14 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/temperature/adi,ltc2983.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices LTC2983 Multi-sensor Temperature system
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maintainers:
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- Nuno Sá <nuno.sa@analog.com>
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description: |
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Analog Devices LTC2983 Multi-Sensor Digital Temperature Measurement System
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https://www.analog.com/media/en/technical-documentation/data-sheets/2983fc.pdf
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properties:
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compatible:
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enum:
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- adi,ltc2983
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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adi,mux-delay-config-us:
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description:
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The LTC2983 performs 2 or 3 internal conversion cycles per temperature
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result. Each conversion cycle is performed with different excitation and
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input multiplexer configurations. Prior to each conversion, these
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excitation circuits and input switch configurations are changed and an
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internal 1ms delay ensures settling prior to the conversion cycle in most
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cases. An extra delay can be configured using this property. The value is
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rounded to nearest 100us.
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maximum: 255
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adi,filter-notch-freq:
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description:
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Set's the default setting of the digital filter. The default is
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simultaneous 50/60Hz rejection.
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0 - 50/60Hz rejection
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1 - 60Hz rejection
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2 - 50Hz rejection
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 2
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'#address-cells':
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const: 1
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'#size-cells':
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const: 0
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patternProperties:
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"@([1-9]|1[0-9]|20)$":
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type: object
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properties:
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reg:
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description:
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The channel number. It can be connected to one of the 20 channels of
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the device.
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minimum: 1
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maximum: 20
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adi,sensor-type:
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description: Identifies the type of sensor connected to the device.
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$ref: /schemas/types.yaml#/definitions/uint32
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required:
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- reg
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- adi,sensor-type
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"^thermocouple@":
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type: object
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description:
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Represents a thermocouple sensor which is connected to one of the device
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channels.
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properties:
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adi,sensor-type:
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description: |
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1 - Type J Thermocouple
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2 - Type K Thermocouple
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3 - Type E Thermocouple
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4 - Type N Thermocouple
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5 - Type R Thermocouple
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6 - Type S Thermocouple
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7 - Type T Thermocouple
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8 - Type B Thermocouple
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9 - Custom Thermocouple
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1
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maximum: 9
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adi,single-ended:
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description:
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Boolean property which set's the thermocouple as single-ended.
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type: boolean
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adi,sensor-oc-current-microamp:
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description:
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This property set's the pulsed current value applied during
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open-circuit detect.
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enum: [10, 100, 500, 1000]
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adi,cold-junction-handle:
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description:
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Phandle which points to a sensor object responsible for measuring
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the thermocouple cold junction temperature.
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$ref: "/schemas/types.yaml#/definitions/phandle"
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adi,custom-thermocouple:
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description:
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This is a table, where each entry should be a pair of
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voltage(mv)-temperature(K). The entries must be given in nv and uK
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so that, the original values must be multiplied by 1000000. For
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more details look at table 69 and 70.
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Note should be signed, but dtc doesn't currently maintain the
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sign.
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$ref: /schemas/types.yaml#/definitions/uint64-matrix
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minItems: 3
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maxItems: 64
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items:
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minItems: 2
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maxItems: 2
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"^diode@":
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type: object
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description:
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Represents a diode sensor which is connected to one of the device
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channels.
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properties:
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adi,sensor-type:
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description: Identifies the sensor as a diode.
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$ref: /schemas/types.yaml#/definitions/uint32
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const: 28
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adi,single-ended:
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description: Boolean property which set's the diode as single-ended.
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type: boolean
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adi,three-conversion-cycles:
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description:
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Boolean property which set's three conversion cycles removing
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parasitic resistance effects between the LTC2983 and the diode.
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type: boolean
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adi,average-on:
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description:
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Boolean property which enables a running average of the diode
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temperature reading. This reduces the noise when the diode is used
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as a cold junction temperature element on an isothermal block
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where temperatures change slowly.
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type: boolean
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adi,excitation-current-microamp:
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description:
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This property controls the magnitude of the excitation current
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applied to the diode. Depending on the number of conversions
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cycles, this property will assume different predefined values on
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each cycle. Just set the value of the first cycle (1l).
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enum: [10, 20, 40, 80]
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adi,ideal-factor-value:
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description:
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This property sets the diode ideality factor. The real value must
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be multiplied by 1000000 to remove the fractional part. For more
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information look at table 20 of the datasheet.
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$ref: /schemas/types.yaml#/definitions/uint32
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"^rtd@":
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type: object
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description:
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Represents a rtd sensor which is connected to one of the device channels.
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properties:
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reg:
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minimum: 2
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maximum: 20
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adi,sensor-type:
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description: |
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10 - RTD PT-10
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11 - RTD PT-50
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12 - RTD PT-100
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13 - RTD PT-200
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14 - RTD PT-500
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15 - RTD PT-1000
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16 - RTD PT-1000 (0.00375)
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17 - RTD NI-120
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18 - RTD Custom
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 10
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maximum: 18
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adi,rsense-handle:
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description:
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Phandle pointing to a rsense object associated with this RTD.
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$ref: "/schemas/types.yaml#/definitions/phandle"
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adi,number-of-wires:
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description:
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Identifies the number of wires used by the RTD. Setting this
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property to 5 means 4 wires with Kelvin Rsense.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [2, 3, 4, 5]
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adi,rsense-share:
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description:
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Boolean property which enables Rsense sharing, where one sense
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resistor is used for multiple 2-, 3-, and/or 4-wire RTDs.
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type: boolean
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adi,current-rotate:
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description:
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Boolean property which enables excitation current rotation to
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automatically remove parasitic thermocouple effects. Note that
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this property is not allowed for 2- and 3-wire RTDs.
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type: boolean
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adi,excitation-current-microamp:
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description:
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This property controls the magnitude of the excitation current
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applied to the RTD.
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enum: [5, 10, 25, 50, 100, 250, 500, 1000]
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adi,rtd-curve:
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description:
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This property set the RTD curve used and the corresponding
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Callendar-VanDusen constants. Look at table 30 of the datasheet.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 3
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adi,custom-rtd:
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description:
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This is a table, where each entry should be a pair of
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resistance(ohm)-temperature(K). The entries added here are in uohm
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and uK. For more details values look at table 74 and 75.
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$ref: /schemas/types.yaml#/definitions/uint64-matrix
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items:
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minItems: 3
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maxItems: 64
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items:
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minItems: 2
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maxItems: 2
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required:
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- adi,rsense-handle
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dependencies:
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adi,current-rotate: [ "adi,rsense-share" ]
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"^thermistor@":
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type: object
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description:
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Represents a thermistor sensor which is connected to one of the device
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channels.
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properties:
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adi,sensor-type:
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description:
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19 - Thermistor 44004/44033 2.252kohm at 25°C
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20 - Thermistor 44005/44030 3kohm at 25°C
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21 - Thermistor 44007/44034 5kohm at 25°C
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22 - Thermistor 44006/44031 10kohm at 25°C
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23 - Thermistor 44008/44032 30kohm at 25°C
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24 - Thermistor YSI 400 2.252kohm at 25°C
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25 - Thermistor Spectrum 1003k 1kohm
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26 - Thermistor Custom Steinhart-Hart
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27 - Custom Thermistor
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 19
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maximum: 27
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adi,rsense-handle:
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description:
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Phandle pointing to a rsense object associated with this
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thermistor.
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$ref: "/schemas/types.yaml#/definitions/phandle"
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adi,single-ended:
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description:
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Boolean property which set's the thermistor as single-ended.
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type: boolean
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adi,rsense-share:
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description:
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Boolean property which enables Rsense sharing, where one sense
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resistor is used for multiple thermistors. Note that this property
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is ignored if adi,single-ended is set.
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type: boolean
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adi,current-rotate:
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description:
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Boolean property which enables excitation current rotation to
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automatically remove parasitic thermocouple effects.
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type: boolean
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adi,excitation-current-nanoamp:
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description:
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This property controls the magnitude of the excitation current
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applied to the thermistor. Value 0 set's the sensor in auto-range
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mode.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 250, 500, 1000, 5000, 10000, 25000, 50000, 100000, 250000,
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500000, 1000000]
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adi,custom-thermistor:
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description:
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This is a table, where each entry should be a pair of
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resistance(ohm)-temperature(K). The entries added here are in uohm
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and uK only for custom thermistors. For more details look at table
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78 and 79.
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$ref: /schemas/types.yaml#/definitions/uint64-matrix
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minItems: 3
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maxItems: 64
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items:
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minItems: 2
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maxItems: 2
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adi,custom-steinhart:
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description:
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Steinhart-Hart coefficients are also supported and can
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be programmed into the device memory using this property. For
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Steinhart sensors the coefficients are given in the raw
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format. Look at table 82 for more information.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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items:
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minItems: 6
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maxItems: 6
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required:
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- adi,rsense-handle
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dependencies:
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adi,current-rotate: [ "adi,rsense-share" ]
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"^adc@":
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type: object
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description: Represents a channel which is being used as a direct adc.
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properties:
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adi,sensor-type:
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description: Identifies the sensor as a direct adc.
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$ref: /schemas/types.yaml#/definitions/uint32
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const: 30
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adi,single-ended:
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description: Boolean property which set's the adc as single-ended.
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type: boolean
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"^rsense@":
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type: object
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description:
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Represents a rsense which is connected to one of the device channels.
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Rsense are used by thermistors and RTD's.
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properties:
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reg:
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minimum: 2
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maximum: 20
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adi,sensor-type:
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description: Identifies the sensor as a rsense.
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$ref: /schemas/types.yaml#/definitions/uint32
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const: 29
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adi,rsense-val-milli-ohms:
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description:
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Sets the value of the sense resistor. Look at table 20 of the
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datasheet for information.
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required:
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- adi,rsense-val-milli-ohms
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required:
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- compatible
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- reg
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- interrupts
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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sensor_ltc2983: ltc2983@0 {
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compatible = "adi,ltc2983";
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reg = <0>;
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#address-cells = <1>;
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#size-cells = <0>;
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interrupts = <20 IRQ_TYPE_EDGE_RISING>;
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interrupt-parent = <&gpio>;
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thermocouple@18 {
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reg = <18>;
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adi,sensor-type = <8>; //Type B
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adi,sensor-oc-current-microamp = <10>;
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adi,cold-junction-handle = <&diode5>;
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};
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diode5: diode@5 {
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reg = <5>;
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adi,sensor-type = <28>;
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};
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rsense2: rsense@2 {
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reg = <2>;
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adi,sensor-type = <29>;
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adi,rsense-val-milli-ohms = <1200000>; //1.2Kohms
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};
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rtd@14 {
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reg = <14>;
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adi,sensor-type = <15>; //PT1000
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/*2-wire, internal gnd, no current rotation*/
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adi,number-of-wires = <2>;
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adi,rsense-share;
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adi,excitation-current-microamp = <500>;
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adi,rsense-handle = <&rsense2>;
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};
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adc@10 {
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reg = <10>;
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adi,sensor-type = <30>;
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adi,single-ended;
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};
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thermistor@12 {
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reg = <12>;
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adi,sensor-type = <26>; //Steinhart
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adi,rsense-handle = <&rsense2>;
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adi,custom-steinhart = <0x00F371EC 0x12345678
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0x2C0F8733 0x10018C66 0xA0FEACCD
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0x90021D99>; //6 entries
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};
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thermocouple@20 {
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reg = <20>;
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adi,sensor-type = <9>; //custom thermocouple
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adi,single-ended;
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adi,custom-thermocouple = /bits/ 64
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<(-50220000) 0>,
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<(-30200000) 99100000>,
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<(-5300000) 135400000>,
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<0 273150000>,
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<40200000 361200000>,
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<55300000 522100000>,
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<88300000 720300000>,
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<132200000 811200000>,
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<188700000 922500000>,
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<460400000 1000000000>; //10 pairs
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};
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};
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};
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...
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