AD4130-8 is an ultra-low power, high precision, measurement solution for
low bandwidth battery operated applications.
The fully integrated AFE (Analog Front-End) includes a multiplexer for up
to 16 single-ended or 8 differential inputs, PGA (Programmable Gain
Amplifier), 24-bit Sigma-Delta ADC, on-chip reference and oscillator,
selectable filter options, smart sequencer, sensor biasing and excitation
options, diagnostics, and a FIFO buffer.
Signed-off-by: Cosmin Tanislav <[email protected]>
---
.../bindings/iio/adc/adi,ad4130.yaml | 262 ++++++++++++++++++
1 file changed, 262 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
new file mode 100644
index 000000000000..c06b8a96d31e
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
@@ -0,0 +1,262 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2022 Analog Devices Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ad4130.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD4130 ADC device driver
+
+maintainers:
+ - Cosmin Tanislav <[email protected]>
+
+description: |
+ Bindings for the Analog Devices AD4130 ADC. Datasheet can be found here:
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD4130-8.pdf
+
+properties:
+ compatible:
+ enum:
+ - adi,ad4130
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+ description: phandle to the master clock (mclk)
+
+ clock-names:
+ items:
+ - const: mclk
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-names:
+ description: |
+ Specify which interrupt pin should be configured as Data Ready / FIFO
+ interrupt.
+ Default if not supplied is int.
+ enum:
+ - int
+ - clk
+ - p2
+ - dout
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ refin1-supply:
+ description: refin1 supply. Can be used as reference for conversion.
+
+ refin2-supply:
+ description: refin2 supply. Can be used as reference for conversion.
+
+ avdd-supply:
+ description: AVDD voltage supply. Can be used as reference for conversion.
+
+ iovdd-supply:
+ description: IOVDD voltage supply. Used for the chip interface.
+
+ spi-max-frequency:
+ maximum: 5000000
+
+ adi,int-clk-out:
+ description: Specify if the internal clock should be exposed on the CLK pin.
+ type: boolean
+
+ adi,ext-clk-freq:
+ description: Specify the frequency of the external clock.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [76800, 153600]
+ default: 76800
+
+ adi,bipolar:
+ description: Specify if the device should be used in bipolar mode.
+ type: boolean
+
+ adi,vbias-pins:
+ description: Analog inputs to apply a voltage bias of (AVDD − AVSS) / 2 to.
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ maxItems: 16
+ items:
+ minimum: 0
+ maximum: 15
+
+required:
+ - compatible
+ - reg
+ - interrupts
+
+patternProperties:
+ "^channel@([0-9]|1[0-5])$":
+ type: object
+ $ref: adc.yaml
+ unevaluatedProperties: false
+
+ properties:
+ reg:
+ description: |
+ The channel number.
+ items:
+ minimum: 0
+ maximum: 15
+
+ diff-channels:
+ description: |
+ Besides the analog inputs available, internal inputs can be used.
+ 16: Internal temperature sensor.
+ 17: AVSS
+ 18: Internal reference
+ 19: DGND
+ 20: (AVDD − AVSS)/6+
+ 21: (AVDD − AVSS)/6-
+ 22: (IOVDD − DGND)/6+
+ 23: (IOVDD − DGND)/6-
+ 24: (ALDO − AVSS)/6+
+ 25: (ALDO − AVSS)/6-
+ 26: (DLDO − DGND)/6+
+ 27: (DLDO − DGND)/6-
+ 28: V_MV_P
+ 29: V_MV_M
+ items:
+ minimum: 0
+ maximum: 29
+
+ adi,reference-select:
+ description: |
+ Select the reference source to use when converting on the
+ specific channel. Valid values are:
+ 0: REFIN1(+)/REFIN1(−)
+ 1: REFIN2(+)/REFIN2(−)
+ 2: REFOUT/AVSS (Internal reference)
+ 3: AVDD/AVSS
+ If not specified, REFIN1 is used.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+ default: 0
+
+ adi,excitation-pin-0:
+ description: |
+ Analog input to apply excitation current to while the channel
+ is active.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ default: 0
+
+ adi,excitation-pin-1:
+ description: |
+ Analog input to apply excitation current to while this channel
+ is active.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+ default: 0
+
+ adi,excitation-current-0-nanoamps:
+ description: |
+ Excitation current in nanoamps to be applied to pin specified in
+ adi,excitation-pin-0 while this channel is active.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000]
+ default: 0
+
+ adi,excitation-current-1-nanoamps:
+ description: |
+ Excitation current in nanoamps to be applied to pin specified in
+ adi,excitation-pin-1 while this channel is active.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000]
+ default: 0
+
+ adi,burnout-current-nanoamps:
+ description: |
+ Burnout current in nanoamps to be applied for this channel.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 500, 2000, 4000]
+ default: 0
+
+ adi,buffered-positive:
+ description: Enable buffered mode for positive input.
+ type: boolean
+
+ adi,buffered-negative:
+ description: Enable buffered mode for negative input.
+ type: boolean
+
+ required:
+ - reg
+ - diff-channels
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@0 {
+ compatible = "adi,ad4130";
+ reg = <0>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ spi-max-frequency = <5000000>;
+ interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-parent = <&gpio>;
+
+ channel@0 {
+ reg = <0>;
+
+ adi,reference-select = <2>;
+
+ /* AIN8, AIN9 */
+ diff-channels = <8 9>;
+ };
+
+ channel@1 {
+ reg = <1>;
+
+ adi,reference-select = <2>;
+
+ /* AIN10, AIN11 */
+ diff-channels = <10 11>;
+ };
+
+ channel@2 {
+ reg = <2>;
+
+ adi,reference-select = <2>;
+
+ /* Temperature Sensor, DGND */
+ diff-channels = <16 19>;
+ };
+
+ channel@3 {
+ reg = <3>;
+
+ adi,reference-select = <2>;
+
+ /* Internal reference, DGND */
+ diff-channels = <18 19>;
+ };
+
+ channel@4 {
+ reg = <4>;
+
+ adi,reference-select = <2>;
+
+ /* DGND, DGND */
+ diff-channels = <19 19>;
+ };
+ };
+ };
--
2.36.1
On Wed, Jun 08, 2022 at 12:12:37PM +0300, Cosmin Tanislav wrote:
> AD4130-8 is an ultra-low power, high precision, measurement solution for
> low bandwidth battery operated applications.
>
> The fully integrated AFE (Analog Front-End) includes a multiplexer for up
> to 16 single-ended or 8 differential inputs, PGA (Programmable Gain
> Amplifier), 24-bit Sigma-Delta ADC, on-chip reference and oscillator,
> selectable filter options, smart sequencer, sensor biasing and excitation
> options, diagnostics, and a FIFO buffer.
>
> Signed-off-by: Cosmin Tanislav <[email protected]>
> ---
> .../bindings/iio/adc/adi,ad4130.yaml | 262 ++++++++++++++++++
> 1 file changed, 262 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
> new file mode 100644
> index 000000000000..c06b8a96d31e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
> @@ -0,0 +1,262 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright 2022 Analog Devices Inc.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/adi,ad4130.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices AD4130 ADC device driver
> +
> +maintainers:
> + - Cosmin Tanislav <[email protected]>
> +
> +description: |
> + Bindings for the Analog Devices AD4130 ADC. Datasheet can be found here:
> + https://www.analog.com/media/en/technical-documentation/data-sheets/AD4130-8.pdf
> +
> +properties:
> + compatible:
> + enum:
> + - adi,ad4130
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> + description: phandle to the master clock (mclk)
> +
> + clock-names:
> + items:
> + - const: mclk
> +
> + interrupts:
> + maxItems: 1
> +
> + interrupt-names:
> + description: |
> + Specify which interrupt pin should be configured as Data Ready / FIFO
> + interrupt.
> + Default if not supplied is int.
default: int
> + enum:
> + - int
> + - clk
> + - p2
> + - dout
> +
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
> +
> + refin1-supply:
> + description: refin1 supply. Can be used as reference for conversion.
> +
> + refin2-supply:
> + description: refin2 supply. Can be used as reference for conversion.
> +
> + avdd-supply:
> + description: AVDD voltage supply. Can be used as reference for conversion.
> +
> + iovdd-supply:
> + description: IOVDD voltage supply. Used for the chip interface.
> +
> + spi-max-frequency:
> + maximum: 5000000
> +
> + adi,int-clk-out:
> + description: Specify if the internal clock should be exposed on the CLK pin.
> + type: boolean
> +
> + adi,ext-clk-freq:
> + description: Specify the frequency of the external clock.
> + $ref: /schemas/types.yaml#/definitions/uint32
-hz suffix and drop the type.
> + enum: [76800, 153600]
> + default: 76800
> +
> + adi,bipolar:
> + description: Specify if the device should be used in bipolar mode.
> + type: boolean
> +
> + adi,vbias-pins:
> + description: Analog inputs to apply a voltage bias of (AVDD − AVSS) / 2 to.
> + $ref: /schemas/types.yaml#/definitions/uint32-array
> + maxItems: 16
> + items:
> + minimum: 0
> + maximum: 15
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> +
> +patternProperties:
> + "^channel@([0-9]|1[0-5])$":
> + type: object
> + $ref: adc.yaml
> + unevaluatedProperties: false
> +
> + properties:
> + reg:
> + description: |
Don't need '|'.
> + The channel number.
> + items:
> + minimum: 0
> + maximum: 15
This allows for more than 1 channel to be listed in reg. Is that intent?
If not, drop 'items'. If so and there a valid range, then add
minItems/maxItems.
> +
> + diff-channels:
> + description: |
> + Besides the analog inputs available, internal inputs can be used.
> + 16: Internal temperature sensor.
> + 17: AVSS
> + 18: Internal reference
> + 19: DGND
> + 20: (AVDD − AVSS)/6+
> + 21: (AVDD − AVSS)/6-
> + 22: (IOVDD − DGND)/6+
> + 23: (IOVDD − DGND)/6-
> + 24: (ALDO − AVSS)/6+
> + 25: (ALDO − AVSS)/6-
> + 26: (DLDO − DGND)/6+
> + 27: (DLDO − DGND)/6-
> + 28: V_MV_P
> + 29: V_MV_M
> + items:
> + minimum: 0
> + maximum: 29
> +
> + adi,reference-select:
> + description: |
> + Select the reference source to use when converting on the
> + specific channel. Valid values are:
> + 0: REFIN1(+)/REFIN1(−)
> + 1: REFIN2(+)/REFIN2(−)
> + 2: REFOUT/AVSS (Internal reference)
> + 3: AVDD/AVSS
> + If not specified, REFIN1 is used.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + enum: [0, 1, 2, 3]
> + default: 0
> +
> + adi,excitation-pin-0:
> + description: |
> + Analog input to apply excitation current to while the channel
> + is active.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + minimum: 0
> + maximum: 15
> + default: 0
> +
> + adi,excitation-pin-1:
> + description: |
> + Analog input to apply excitation current to while this channel
> + is active.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + minimum: 0
> + maximum: 15
> + default: 0
> +
> + adi,excitation-current-0-nanoamps:
Prior property was 'adi,excitation-current-nanoamp'. Please match
'-nanoamp'.
> + description: |
> + Excitation current in nanoamps to be applied to pin specified in
> + adi,excitation-pin-0 while this channel is active.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000]
> + default: 0
> +
> + adi,excitation-current-1-nanoamps:
> + description: |
> + Excitation current in nanoamps to be applied to pin specified in
> + adi,excitation-pin-1 while this channel is active.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000]
> + default: 0
> +
> + adi,burnout-current-nanoamps:
> + description: |
> + Burnout current in nanoamps to be applied for this channel.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + enum: [0, 500, 2000, 4000]
> + default: 0
> +
> + adi,buffered-positive:
> + description: Enable buffered mode for positive input.
> + type: boolean
> +
> + adi,buffered-negative:
> + description: Enable buffered mode for negative input.
> + type: boolean
> +
> + required:
> + - reg
> + - diff-channels
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> +
> + spi {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + adc@0 {
> + compatible = "adi,ad4130";
> + reg = <0>;
> +
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + spi-max-frequency = <5000000>;
> + interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
> + interrupt-parent = <&gpio>;
> +
> + channel@0 {
> + reg = <0>;
> +
> + adi,reference-select = <2>;
> +
> + /* AIN8, AIN9 */
> + diff-channels = <8 9>;
> + };
> +
> + channel@1 {
> + reg = <1>;
> +
> + adi,reference-select = <2>;
> +
> + /* AIN10, AIN11 */
> + diff-channels = <10 11>;
> + };
> +
> + channel@2 {
> + reg = <2>;
> +
> + adi,reference-select = <2>;
> +
> + /* Temperature Sensor, DGND */
> + diff-channels = <16 19>;
> + };
> +
> + channel@3 {
> + reg = <3>;
> +
> + adi,reference-select = <2>;
> +
> + /* Internal reference, DGND */
> + diff-channels = <18 19>;
> + };
> +
> + channel@4 {
> + reg = <4>;
> +
> + adi,reference-select = <2>;
> +
> + /* DGND, DGND */
> + diff-channels = <19 19>;
> + };
> + };
> + };
> --
> 2.36.1
>
>
On 6/10/22 00:03, Rob Herring wrote:
> On Wed, Jun 08, 2022 at 12:12:37PM +0300, Cosmin Tanislav wrote:
>> AD4130-8 is an ultra-low power, high precision, measurement solution for
>> low bandwidth battery operated applications.
>>
>> The fully integrated AFE (Analog Front-End) includes a multiplexer for up
>> to 16 single-ended or 8 differential inputs, PGA (Programmable Gain
>> Amplifier), 24-bit Sigma-Delta ADC, on-chip reference and oscillator,
>> selectable filter options, smart sequencer, sensor biasing and excitation
>> options, diagnostics, and a FIFO buffer.
>>
>> Signed-off-by: Cosmin Tanislav <[email protected]>
>> ---
>> .../bindings/iio/adc/adi,ad4130.yaml | 262 ++++++++++++++++++
>> 1 file changed, 262 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
>> new file mode 100644
>> index 000000000000..c06b8a96d31e
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
>> @@ -0,0 +1,262 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +# Copyright 2022 Analog Devices Inc.
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/iio/adc/adi,ad4130.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Analog Devices AD4130 ADC device driver
>> +
>> +maintainers:
>> + - Cosmin Tanislav <[email protected]>
>> +
>> +description: |
>> + Bindings for the Analog Devices AD4130 ADC. Datasheet can be found here:
>> + https://www.analog.com/media/en/technical-documentation/data-sheets/AD4130-8.pdf
>> +
>> +properties:
>> + compatible:
>> + enum:
>> + - adi,ad4130
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + clocks:
>> + maxItems: 1
>> + description: phandle to the master clock (mclk)
>> +
>> + clock-names:
>> + items:
>> + - const: mclk
>> +
>> + interrupts:
>> + maxItems: 1
>> +
>> + interrupt-names:
>> + description: |
>> + Specify which interrupt pin should be configured as Data Ready / FIFO
>> + interrupt.
>> + Default if not supplied is int.
>
> default: int
Violates string array schema. I'm pretty sure I've said this before.
>
>> + enum:
>> + - int
>> + - clk
>> + - p2
>> + - dout
>> +
>> + '#address-cells':
>> + const: 1
>> +
>> + '#size-cells':
>> + const: 0
>> +
>> + refin1-supply:
>> + description: refin1 supply. Can be used as reference for conversion.
>> +
>> + refin2-supply:
>> + description: refin2 supply. Can be used as reference for conversion.
>> +
>> + avdd-supply:
>> + description: AVDD voltage supply. Can be used as reference for conversion.
>> +
>> + iovdd-supply:
>> + description: IOVDD voltage supply. Used for the chip interface.
>> +
>> + spi-max-frequency:
>> + maximum: 5000000
>> +
>> + adi,int-clk-out:
>> + description: Specify if the internal clock should be exposed on the CLK pin.
>> + type: boolean
>> +
>> + adi,ext-clk-freq:
>> + description: Specify the frequency of the external clock.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>
> -hz suffix and drop the type.
>
>> + enum: [76800, 153600]
>> + default: 76800
>> +
>> + adi,bipolar:
>> + description: Specify if the device should be used in bipolar mode.
>> + type: boolean
>> +
>> + adi,vbias-pins:
>> + description: Analog inputs to apply a voltage bias of (AVDD − AVSS) / 2 to.
>> + $ref: /schemas/types.yaml#/definitions/uint32-array
>> + maxItems: 16
>> + items:
>> + minimum: 0
>> + maximum: 15
>> +
>> +required:
>> + - compatible
>> + - reg
>> + - interrupts
>> +
>> +patternProperties:
>> + "^channel@([0-9]|1[0-5])$":
>> + type: object
>> + $ref: adc.yaml
>> + unevaluatedProperties: false
>> +
>> + properties:
>> + reg:
>> + description: |
>
> Don't need '|'.
>
>> + The channel number.
>> + items:
>> + minimum: 0
>> + maximum: 15
>
> This allows for more than 1 channel to be listed in reg. Is that intent?
> If not, drop 'items'. If so and there a valid range, then add
> minItems/maxItems.
>
>> +
>> + diff-channels:
>> + description: |
>> + Besides the analog inputs available, internal inputs can be used.
>> + 16: Internal temperature sensor.
>> + 17: AVSS
>> + 18: Internal reference
>> + 19: DGND
>> + 20: (AVDD − AVSS)/6+
>> + 21: (AVDD − AVSS)/6-
>> + 22: (IOVDD − DGND)/6+
>> + 23: (IOVDD − DGND)/6-
>> + 24: (ALDO − AVSS)/6+
>> + 25: (ALDO − AVSS)/6-
>> + 26: (DLDO − DGND)/6+
>> + 27: (DLDO − DGND)/6-
>> + 28: V_MV_P
>> + 29: V_MV_M
>> + items:
>> + minimum: 0
>> + maximum: 29
>> +
>> + adi,reference-select:
>> + description: |
>> + Select the reference source to use when converting on the
>> + specific channel. Valid values are:
>> + 0: REFIN1(+)/REFIN1(−)
>> + 1: REFIN2(+)/REFIN2(−)
>> + 2: REFOUT/AVSS (Internal reference)
>> + 3: AVDD/AVSS
>> + If not specified, REFIN1 is used.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + enum: [0, 1, 2, 3]
>> + default: 0
>> +
>> + adi,excitation-pin-0:
>> + description: |
>> + Analog input to apply excitation current to while the channel
>> + is active.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + minimum: 0
>> + maximum: 15
>> + default: 0
>> +
>> + adi,excitation-pin-1:
>> + description: |
>> + Analog input to apply excitation current to while this channel
>> + is active.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + minimum: 0
>> + maximum: 15
>> + default: 0
>> +
>> + adi,excitation-current-0-nanoamps:
>
> Prior property was 'adi,excitation-current-nanoamp'. Please match
> '-nanoamp'.
>
>> + description: |
>> + Excitation current in nanoamps to be applied to pin specified in
>> + adi,excitation-pin-0 while this channel is active.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000]
>> + default: 0
>> +
>> + adi,excitation-current-1-nanoamps:
>> + description: |
>> + Excitation current in nanoamps to be applied to pin specified in
>> + adi,excitation-pin-1 while this channel is active.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000]
>> + default: 0
>> +
>> + adi,burnout-current-nanoamps:
>> + description: |
>> + Burnout current in nanoamps to be applied for this channel.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + enum: [0, 500, 2000, 4000]
>> + default: 0
>> +
>> + adi,buffered-positive:
>> + description: Enable buffered mode for positive input.
>> + type: boolean
>> +
>> + adi,buffered-negative:
>> + description: Enable buffered mode for negative input.
>> + type: boolean
>> +
>> + required:
>> + - reg
>> + - diff-channels
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> + - |
>> + #include <dt-bindings/interrupt-controller/irq.h>
>> +
>> + spi {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + adc@0 {
>> + compatible = "adi,ad4130";
>> + reg = <0>;
>> +
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + spi-max-frequency = <5000000>;
>> + interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
>> + interrupt-parent = <&gpio>;
>> +
>> + channel@0 {
>> + reg = <0>;
>> +
>> + adi,reference-select = <2>;
>> +
>> + /* AIN8, AIN9 */
>> + diff-channels = <8 9>;
>> + };
>> +
>> + channel@1 {
>> + reg = <1>;
>> +
>> + adi,reference-select = <2>;
>> +
>> + /* AIN10, AIN11 */
>> + diff-channels = <10 11>;
>> + };
>> +
>> + channel@2 {
>> + reg = <2>;
>> +
>> + adi,reference-select = <2>;
>> +
>> + /* Temperature Sensor, DGND */
>> + diff-channels = <16 19>;
>> + };
>> +
>> + channel@3 {
>> + reg = <3>;
>> +
>> + adi,reference-select = <2>;
>> +
>> + /* Internal reference, DGND */
>> + diff-channels = <18 19>;
>> + };
>> +
>> + channel@4 {
>> + reg = <4>;
>> +
>> + adi,reference-select = <2>;
>> +
>> + /* DGND, DGND */
>> + diff-channels = <19 19>;
>> + };
>> + };
>> + };
>> --
>> 2.36.1
>>
>>