| Message ID | 20231007234838.8748-2-fr0st61te@gmail.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add maxim max34408/34409 ADC driver and yaml | expand |
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@gmail.com> > --- > .../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@gmail.com> > + > +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 >
On Sun, 8 Oct 2023 02:48:37 +0300 Ivan Mikhaylov <fr0st61te@gmail.com> wrote: > The hardware binding for i2c current monitoring device with overcurrent > control. > > Signed-off-by: Ivan Mikhaylov <fr0st61te@gmail.com> > --- > .../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 > + > +maintainers: > + - Ivan Mikhaylov <fr0st61te@gmail.com> > + > +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: I guess the review crossed with you sending v5. There is some feedback on v4 you need to address here. > + 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]$": > + $ref: adc.yaml > + type: object > + description: > + Represents the internal channels of the ADC. > + > + properties: > + reg: > + items: > + minimum: 0 > + maximum: 3 > + > + maxim,rsense-val-micro-ohms: > + description: > + Adjust the Rsense value to monitor higher or lower current levels for > + input. > + enum: [250, 500, 1000, 5000, 10000, 50000, 100000, 200000, 500000] > + default: 1000 > + > + required: > + - reg > + - maxim,rsense-val-micro-ohms > + > + unevaluatedProperties: false > + > +required: > + - compatible > + - reg > + > +allOf: > + - if: > + properties: > + compatible: > + contains: > + const: maxim,max34408 > + then: > + patternProperties: > + "^channel@[2-3]$": false > + "^channel@[0-1]$": > + properties: > + reg: > + minimum: 0 > + maximum: 1 > + else: > + patternProperties: > + "^channel@[0-3]$": > + properties: > + reg: > + minimum: 0 > + 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>; > + }; > + }; > + };
On Tue, 2023-10-10 at 15:40 +0100, Jonathan Cameron wrote: > On Sun, 8 Oct 2023 02:48:37 +0300 > Ivan Mikhaylov <fr0st61te@gmail.com> wrote: > > > The hardware binding for i2c current monitoring device with > > overcurrent > > control. > > > > Signed-off-by: Ivan Mikhaylov <fr0st61te@gmail.com> > > --- > > .../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 > > + > > +maintainers: > > + - Ivan Mikhaylov <fr0st61te@gmail.com> > > + > > +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: > > I guess the review crossed with you sending v5. There is some > feedback on v4 you need > to address here. Jonathan, I thought I did, I've changed ena to powerdown-gpios from Krzysztof's comments but about this one pin I'm still not sure, it looks like *-enable-gpios (like in *-enable-gpios pins in iio/frequency/adi,adf4377.yaml) pin or is it not? Or maybe any other suggestions about naming of this one? Thanks. > > > + 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]$": > > + $ref: adc.yaml > > + type: object > > + description: > > + Represents the internal channels of the ADC. > > + > > + properties: > > + reg: > > + items: > > + minimum: 0 > > + maximum: 3 > > + > > + maxim,rsense-val-micro-ohms: > > + description: > > + Adjust the Rsense value to monitor higher or lower > > current levels for > > + input. > > + enum: [250, 500, 1000, 5000, 10000, 50000, 100000, 200000, > > 500000] > > + default: 1000 > > + > > + required: > > + - reg > > + - maxim,rsense-val-micro-ohms > > + > > + unevaluatedProperties: false > > + > > +required: > > + - compatible > > + - reg > > + > > +allOf: > > + - if: > > + properties: > > + compatible: > > + contains: > > + const: maxim,max34408 > > + then: > > + patternProperties: > > + "^channel@[2-3]$": false > > + "^channel@[0-1]$": > > + properties: > > + reg: > > + minimum: 0 > > + maximum: 1 > > + else: > > + patternProperties: > > + "^channel@[0-3]$": > > + properties: > > + reg: > > + minimum: 0 > > + 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>; > > + }; > > + }; > > + }; >
On Thu, 2023-10-12 at 08:40 +0100, Jonathan Cameron wrote: > On Tue, 10 Oct 2023 23:22:48 +0300 > Ivan Mikhaylov <fr0st61te@gmail.com> wrote: > > > On Tue, 2023-10-10 at 15:40 +0100, Jonathan Cameron wrote: > > > On Sun, 8 Oct 2023 02:48:37 +0300 > > > Ivan Mikhaylov <fr0st61te@gmail.com> wrote: > > > > > > > The hardware binding for i2c current monitoring device with > > > > overcurrent > > > > control. > > > > > > > > Signed-off-by: Ivan Mikhaylov <fr0st61te@gmail.com> > > > > --- > > > > .../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 > > > > + > > > > +maintainers: > > > > + - Ivan Mikhaylov <fr0st61te@gmail.com> > > > > + > > > > +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: > > > > > > I guess the review crossed with you sending v5. There is some > > > feedback on v4 you need > > > to address here. > > > > Jonathan, I thought I did, I've changed ena to powerdown-gpios from > > Krzysztof's comments but about this one pin I'm still not sure, it > > looks like *-enable-gpios (like in *-enable-gpios pins in > > iio/frequency/adi,adf4377.yaml) pin or is it not? Or maybe any > > other > > suggestions about naming of this one? > > > > Thanks. > > shutdown-gpios and make the sense (active high / low) such that > setting > it results in teh device being shut down. > Or treat it as an enable and enable-gpios > > Something that indicates both shutdown and enable is confusing ;) > > Jonathan Jonathan, then I make these changes: powerdown-gpios: -> output-enable: shtdn-enable-gpios: -> enable-gpios: Is it ok? Thanks.
On Fri, 13 Oct 2023 11:53:33 +0200 Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> wrote: > On 13/10/2023 11:09, Jonathan Cameron wrote: > >>>>>>>> + shtdn-enable-gpios: > >>>>>>> > >>>>>>> I guess the review crossed with you sending v5. There is some > >>>>>>> feedback on v4 you need > >>>>>>> to address here. > >>>>>> > >>>>>> Jonathan, I thought I did, I've changed ena to powerdown-gpios from > >>>>>> Krzysztof's comments but about this one pin I'm still not sure, it > >>>>>> looks like *-enable-gpios (like in *-enable-gpios pins in > >>>>>> iio/frequency/adi,adf4377.yaml) pin or is it not? Or maybe any > >>>>>> other > >>>>>> suggestions about naming of this one? > >>>>>> > >>>>>> Thanks. > >>>>> > >>>>> shutdown-gpios and make the sense (active high / low) such that > >>>>> setting > >>>>> it results in teh device being shut down. > >>>>> Or treat it as an enable and enable-gpios > >>>>> > >>>>> Something that indicates both shutdown and enable is confusing ;) > >>>>> > >>>>> Jonathan > >>>> > >>>> > >>>> Jonathan, then I make these changes: > >>>> > >>>> powerdown-gpios: -> output-enable: > >>> Needs to retain the gpios bit as we want the standard gpio stuff to pick > >>> them up. I'm not that keen on output-enable-gpios though. The activity > >>> here is very much 'shutdown because of error or not enabled' I think. > >>> So perhaps we flip the sense and document that it needs to be active low? > >>> > >>>> shtdn-enable-gpios: -> enable-gpios: > >>>> > >>>> Is it ok? > >>> > >>> Conor, Rob, Krzysztof - you probably have a better insight into this than > >>> I do. > >>> > >> > >> "enable-gpios" are for turning on a specific feature, not powering > >> on/off entire device. For example to enable regulator output. > >> > >> "powerdown-gpios" are for turning device on/off. > >> > >> I don't know what do you have in your device. > > Ok. Sounds like that what is enable-gpios above should be shutdown-gpios. > > shutdown-gpios sounds exactly the same as powerdown-gpios and it is > already used in exactly same context. Oops. Yup. powerdown-gpios seems appropriate. > > > The other case is a device output indicating whether the device is > > shutdown. That can happen because it was told to do so (via the other gpio), > > or because it is in an error state. What's a good naming convention for that? > > There is no convention and I did not see such case so far. > powerdown-status-gpios? powerdown-state-gpios? Either seems reasonable. Thanks, J > > > > Best regards, > Krzysztof >
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 + +maintainers: + - Ivan Mikhaylov <fr0st61te@gmail.com> + +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]$": + $ref: adc.yaml + type: object + description: + Represents the internal channels of the ADC. + + properties: + reg: + items: + minimum: 0 + maximum: 3 + + maxim,rsense-val-micro-ohms: + description: + Adjust the Rsense value to monitor higher or lower current levels for + input. + enum: [250, 500, 1000, 5000, 10000, 50000, 100000, 200000, 500000] + default: 1000 + + required: + - reg + - maxim,rsense-val-micro-ohms + + unevaluatedProperties: false + +required: + - compatible + - reg + +allOf: + - if: + properties: + compatible: + contains: + const: maxim,max34408 + then: + patternProperties: + "^channel@[2-3]$": false + "^channel@[0-1]$": + properties: + reg: + minimum: 0 + maximum: 1 + else: + patternProperties: + "^channel@[0-3]$": + properties: + reg: + minimum: 0 + 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>; + }; + }; + };
The hardware binding for i2c current monitoring device with overcurrent control. Signed-off-by: Ivan Mikhaylov <fr0st61te@gmail.com> --- .../bindings/iio/adc/maxim,max34408.yaml | 141 ++++++++++++++++++ 1 file changed, 141 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/maxim,max34408.yaml