On Sun, Oct 08, 2023 at 02:48:37AM +0300, Ivan Mikhaylov wrote: > The hardware binding for i2c current monitoring device with overcurrent > control. > > Signed-off-by: Ivan Mikhaylov <fr0st61te@xxxxxxxxx> > --- > .../bindings/iio/adc/maxim,max34408.yaml | 141 ++++++++++++++++++ > 1 file changed, 141 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/adc/maxim,max34408.yaml > > diff --git a/Documentation/devicetree/bindings/iio/adc/maxim,max34408.yaml b/Documentation/devicetree/bindings/iio/adc/maxim,max34408.yaml > new file mode 100644 > index 000000000000..9749f1fd1802 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/adc/maxim,max34408.yaml > @@ -0,0 +1,141 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/iio/adc/maxim,max34408.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Two- and four-channel current monitors with overcurrent control Maxim MAX34408/MAX34409 current monitors with overcurrent control > + > +maintainers: > + - Ivan Mikhaylov <fr0st61te@xxxxxxxxx> > + > +description: | > + The MAX34408/MAX34409 are two- and four-channel current monitors that are > + configured and monitored with a standard I2C/SMBus serial interface. Each > + unidirectional current sensor offers precision high-side operation with a > + low full-scale sense voltage. The devices automatically sequence through > + two or four channels and collect the current-sense samples and average them > + to reduce the effect of impulse noise. The raw ADC samples are compared to > + user-programmable digital thresholds to indicate overcurrent conditions. > + Overcurrent conditions trigger a hardware output to provide an immediate > + indication to shut down any necessary external circuitry. > + > + Specifications about the devices can be found at: > + https://www.analog.com/media/en/technical-documentation/data-sheets/MAX34408-MAX34409.pdf > + > +properties: > + compatible: > + enum: > + - maxim,max34408 > + - maxim,max34409 > + > + "#address-cells": > + const: 1 > + > + "#size-cells": > + const: 0 > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + powerdown-gpios: > + description: > + Shutdown Output. Open-drain output. This output transitions to high impedance > + when any of the digital comparator thresholds are exceeded as long as the ENA > + pin is high. > + maxItems: 1 > + > + shtdn-enable-gpios: > + description: > + SHTDN Enable Input. CMOS digital input. Connect to GND to clear the latch and > + unconditionally deassert (force low) the SHTDN output and reset the shutdown > + delay. Connect to VDD to enable normal latch operation of the SHTDN output. > + maxItems: 1 > + > + vdd-supply: true > + > +patternProperties: > + "^channel@[0-3]$": > + $ref: adc.yaml > + type: object > + description: > + Represents the internal channels of the ADC. > + > + properties: > + reg: > + items: > + minimum: 0 > + maximum: 3 This allows any number of 'reg' entries. You need this instead: items: - minimum: 0 maximum: 3 > + > + maxim,rsense-val-micro-ohms: > + description: > + Adjust the Rsense value to monitor higher or lower current levels for > + input. > + enum: [250, 500, 1000, 5000, 10000, 50000, 100000, 200000, 500000] > + default: 1000 > + > + required: > + - reg > + - maxim,rsense-val-micro-ohms > + > + unevaluatedProperties: false > + > +required: > + - compatible > + - reg > + > +allOf: > + - if: > + properties: > + compatible: > + contains: > + const: maxim,max34408 > + then: > + patternProperties: > + "^channel@[2-3]$": false > + "^channel@[0-1]$": > + properties: > + reg: > + minimum: 0 0 is already the minimum > + maximum: 1 > + else: > + patternProperties: > + "^channel@[0-3]$": > + properties: > + reg: > + minimum: 0 ditto > + maximum: 3 > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/gpio/gpio.h> > + > + i2c { > + #address-cells = <1>; > + #size-cells = <0>; > + > + adc@1e { > + compatible = "maxim,max34409"; > + reg = <0x1e>; > + powerdown-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>; > + shtdn-enable-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>; > + > + #address-cells = <1>; > + #size-cells = <0>; > + > + channel@0 { > + reg = <0x0>; > + maxim,rsense-val-micro-ohms = <5000>; > + }; > + > + channel@1 { > + reg = <0x1>; > + maxim,rsense-val-micro-ohms = <10000>; > + }; > + }; > + }; > -- > 2.42.0 >
