On Thu, Nov 03, 2022 at 11:44:35AM +0200, Cosmin Tanislav wrote: > From: Cosmin Tanislav <cosmin.tanislav@xxxxxxxxxx> > > The AD74115H is a single-channel, software-configurable, input and > output device for industrial control applications. The AD74115H > provides a wide range of use cases, integrated on a single chip. > > These use cases include analog output, analog input, digital output, > digital input, resistance temperature detector (RTD), and thermocouple > measurement capability. The AD74115H also has an integrated HART modem. > > A serial peripheral interface (SPI) is used to handle all communications > to the device, including communications with the HART modem. The digital > input and digital outputs can be accessed via the SPI or the > general-purpose input and output (GPIO) pins to support higher > speed data rates. > > The device features a 16-bit, sigma-delta analog-to-digital converter > (ADC) and a 14-bit digital-to-analog converter (DAC). > The AD74115H contains a high accuracy 2.5 V on-chip reference that can > be used as the DAC and ADC reference. > > Signed-off-by: Cosmin Tanislav <cosmin.tanislav@xxxxxxxxxx> > --- > .../bindings/iio/addac/adi,ad74115.yaml | 370 ++++++++++++++++++ > MAINTAINERS | 7 + > 2 files changed, 377 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/addac/adi,ad74115.yaml > > diff --git a/Documentation/devicetree/bindings/iio/addac/adi,ad74115.yaml b/Documentation/devicetree/bindings/iio/addac/adi,ad74115.yaml > new file mode 100644 > index 000000000000..621f11d5c1f3 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/addac/adi,ad74115.yaml > @@ -0,0 +1,370 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/iio/addac/adi,ad74115.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Analog Devices AD74115H device > + > +maintainers: > + - Cosmin Tanislav <cosmin.tanislav@xxxxxxxxxx> > + > +description: | > + The AD74115H is a single-channel software configurable input/output > + device for industrial control applications. It contains functionality for > + analog output, analog input, digital output, digital input, resistance > + temperature detector, and thermocouple measurements integrated into a single > + chip solution with an SPI interface. The device features a 16-bit ADC and a > + 14-bit DAC. > + > + https://www.analog.com/en/products/ad74115h.html > + > +properties: > + compatible: > + enum: > + - adi,ad74115h > + > + reg: > + maxItems: 1 > + > + '#address-cells': > + const: 1 > + > + '#size-cells': > + const: 0 > + > + spi-max-frequency: > + maximum: 24000000 > + > + spi-cpol: true > + > + reset-gpios: true > + > + interrupts: > + maxItems: 1 > + > + avdd-supply: true > + avcc-supply: true > + dvcc-supply: true > + aldo1v8-supply: true > + dovdd-supply: true > + refin-supply: true > + > + adi,ch-func: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + Channel function. > + 0 - High impedance > + 1 - Voltage output > + 2 - Current output > + 3 - Voltage input > + 4 - Current input, externally-powered > + 5 - Current input, loop-powered > + 6 - Resistance input > + 7 - RTD measure > + 8 - Digital input logic > + 9 - Digital input, loop-powered > + 10 - Current output with HART > + 11 - Current input, externally-powered, with HART > + 12 - Current input, loop-powered, with HART > + minimum: 0 > + maximum: 12 > + default: 0 > + > + adi,conv2-mux: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + Input node for ADC conversion 2. > + 0 - SENSE_EXT1 to AGND_SENSE > + 1 - SENSE_EXT2 to AGND_SENSE > + 2 - SENSE_EXT2 to SENSE_EXT1 > + 3 - AGND to AGND > + minimum: 0 > + maximum: 3 > + default: 0 > + > + adi,conv2-range: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + Conversion range for ADC conversion 2. > + 0 - 0V to 12V > + 1 - -12V to +12V > + 2 - -2.5V to +2.5V > + 3 - -2.5V to 0V > + 4 - 0V to 2.5V > + 5 - 0V to 0.625V > + 6 - -104mV to +104mV > + 7 - 0V to 12V > + minimum: 0 > + maximum: 7 > + default: 0 > + > + adi,sense-agnd-buffer-lp: > + type: boolean > + description: | Don't need '|' if no formatting to preserve. > + Whether to enable low-power buffered mode for the AGND sense pin. > + > + adi,lf-buffer-lp: > + type: boolean > + description: | > + Whether to enable low-power buffered mode for the low-side filtered > + sense pin. > + > + adi,hf-buffer-lp: > + type: boolean > + description: | > + Whether to enable low-power buffered mode for the high-side filtered > + sense pin. > + > + adi,ext2-buffer-lp: > + type: boolean > + description: Whether to enable low-power buffered mode for the EXT2 pin. > + > + adi,ext1-buffer-lp: > + type: boolean > + description: Whether to enable low-power buffered mode for the EXT1 pin. > + > + adi,comparator-invert: > + type: boolean > + description: Whether to invert the comparator output. > + > + adi,digital-input-sink-range-high: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + When not present, the digital input range is from 0 to 3700uA in steps > + of 120uA, with a ~2k series resistance. > + When present, the digital input range is from 0 to 7400uA in steps > + of 240uA, with a ~1k series resistance. > + > + adi,digital-input-sink-microamp: > + description: Sink current in digital input mode. > + minimum: 0 > + maximum: 3700 > + default: 0 > + > + adi,digital-input-debounce-mode-counter-reset: > + type: boolean > + description: | > + When not present, a counter increments when the signal is asserted > + and decrements when the signal is de-asserted. > + When present, a counter increments while the signal is asserted and > + resets when the signal de-asserts > + > + adi,digital-input-unbuffered: > + type: boolean > + description: Whether to buffer digital input signals. > + > + adi,digital-input-short-circuit-detection: > + type: boolean > + description: Whether to detect digital input short circuits. > + > + adi,digital-input-open-circuit-detection: > + type: boolean > + description: Whether to detect digital input open circuits. > + > + adi,digital-input-threshold-mode-fixed: > + type: boolean > + description: | > + When not present, the digital input threshold range is -0.96 * AVDD > + to AVDD. > + When present, the threshold range is fixed from -19V to 30V. > + > + adi,dac-bipolar: > + type: boolean > + description: | > + When not present, the DAC operates in the 0V to 12V range. > + When present, the DAC operates in the -12V to 12V range. > + > + adi,charge-pump: > + type: boolean > + description: Whether to enable the internal charge pump. > + > + adi,dac-hart-slew: > + type: boolean > + description: Whether to use a HART-compatible slew rate. > + > + adi,dac-current-limit-low: > + type: boolean > + description: | > + When not present, the DAC short-circuit current limit is 32mA in > + either source or sink for VOUT and 4mA sink for IOUT. > + When present, the limit is 16mA in either source or sink for VOUT, > + 1mA sink for IOUT. > + > + adi,4-wire-rtd: > + type: boolean > + description: | > + When not present, the ADC should be used for measuring 3-wire RTDs. > + When present, the ADC should be used for measuring 4-wire RTDs. > + > + adi,3-wire-rtd-excitation-swap: > + type: boolean > + description: Whether to swap the excitation for 3-wire RTD. > + > + adi,rtd-excitation-current-microamp: > + description: Excitation current to apply to RTD. > + enum: [250, 500, 750, 1000] > + default: 250 > + > + adi,ext1-burnout: > + type: boolean > + description: Whether to enable burnout current for EXT1. > + > + adi,ext1-burnout-current-nanoamp: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + Burnout current in nanoamps to be applied to EXT1. > + enum: [0, 50, 500, 1000, 10000] > + default: 0 > + > + adi,ext1-burnout-current-polarity-sourcing: > + type: boolean > + description: | > + When not present, the burnout current polarity for EXT1 is sinking. > + When present, the burnout current polarity for EXT1 is sourcing. > + > + adi,ext2-burnout: > + type: boolean > + description: Whether to enable burnout current for EXT2. > + > + adi,ext2-burnout-current-nanoamp: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: Burnout current in nanoamps to be applied to EXT2. > + enum: [0, 50, 500, 1000, 10000] > + default: 0 > + > + adi,ext2-burnout-current-polarity-sourcing: > + type: boolean > + description: | > + When not present, the burnout current polarity for EXT2 is sinking. > + When present, the burnout current polarity for EXT2 is sourcing. > + > + adi,viout-burnout: > + type: boolean > + description: Whether to enable burnout current for VIOUT. > + > + adi,viout-burnout-current-nanoamp: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: Burnout current in nanoamps to be applied to VIOUT. > + enum: [0, 1000, 10000] > + default: 0 > + > + adi,viout-burnout-current-polarity-sourcing: > + type: boolean > + description: | > + When not present, the burnout current polarity for VIOUT is sinking. > + When present, the burnout current polarity for VIOUT is sourcing. > + > + adi,gpio0-mode: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + GPIO functions. > + 0 - Disabled > + 1 - Logic I/O > + 2 - Comparator output > + 3 - Control HART CD > + 4 - Monitor HART CD > + 5 - Monitor HART EOM status > + minimum: 0 > + maximum: 5 > + default: 0 > + > + adi,gpio1-mode: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + GPIO functions. > + 0 - Disabled > + 1 - Logic I/O > + 2 - Drive external digital output FET > + 3 - Control HART RXD > + 4 - Monitor HART RXD > + 5 - Monitor HART SOM status > + minimum: 0 > + maximum: 5 > + default: 0 > + > + adi,gpio2-mode: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + GPIO functions. > + 0 - Disabled > + 1 - Logic I/O > + 2 - Drive internal digital output FET > + 3 - Control HART TXD > + 4 - Monitor HART TXD > + 5 - Monitor HART TX complete status > + minimum: 0 > + maximum: 5 > + default: 0 > + > + adi,gpio3-mode: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + GPIO functions. > + 0 - Disabled > + 1 - Logic I/O > + 2 - High impedance > + 3 - Control HART RTS > + 4 - Monitor HART RTS > + 5 - Monitor HART CD complete status > + minimum: 0 > + maximum: 5 > + default: 0 > + > +required: > + - compatible > + - reg > + - spi-cpol > + - avdd-supply > + > +allOf: > + - $ref: /schemas/spi/spi-peripheral-props.yaml# > + - if: > + properties: > + adi,digital-input-sink-range-high: true The 'if' is true if adi,digital-input-sink-range-high is not present which is probably not what you want. Use 'required' instead. > + then: > + properties: > + adi,digital-input-sink-microamp: > + maximum: 7400 > + > +additionalProperties: false As pointed out, yes, this needs to be unevaluatedProperties. > + > +examples: > + - | > + #include <dt-bindings/gpio/gpio.h> > + #include <dt-bindings/interrupt-controller/irq.h> > + > + spi { > + #address-cells = <1>; > + #size-cells = <0>; > + > + addac@0 { > + compatible = "adi,ad74115h"; > + reg = <0>; > + > + #address-cells = <1>; > + #size-cells = <0>; > + > + spi-max-frequency = <12000000>; > + spi-cpol; > + > + reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>; > + > + interrupt-parent = <&gpio>; > + interrupts = <26 IRQ_TYPE_EDGE_FALLING>; > + > + avdd-supply = <&ad74115_avdd>; > + > + adi,ch-func = <1>; > + adi,conv2-mux = <2>; > + adi,conv2-range = <1>; > + > + adi,gpio0-mode = <1>; > + adi,gpio1-mode = <1>; > + adi,gpio2-mode = <1>; > + adi,gpio3-mode = <1>; > + > + adi,dac-bipolar; > + }; > + }; > +... > diff --git a/MAINTAINERS b/MAINTAINERS > index 7a56c344ca67..5b5533f54f67 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -1175,6 +1175,13 @@ W: https://ez.analog.com/linux-software-drivers > F: Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml > F: drivers/iio/adc/ad7780.c > > +ANALOG DEVICES INC AD74115 DRIVER > +M: Cosmin Tanislav <cosmin.tanislav@xxxxxxxxxx> > +L: linux-iio@xxxxxxxxxxxxxxx > +S: Supported > +W: http://ez.analog.com/community/linux-device-drivers > +F: Documentation/devicetree/bindings/iio/addac/adi,ad74115.yaml > + > ANALOG DEVICES INC AD74413R DRIVER > M: Cosmin Tanislav <cosmin.tanislav@xxxxxxxxxx> > L: linux-iio@xxxxxxxxxxxxxxx > -- > 2.38.1 > >
