From: Dumitru Ceclan <dumitru.ceclan@analog.com>
To: Ceclan Dumitru <dumitru.ceclan@analog.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>,
Michael Hennerich <Michael.Hennerich@analog.com>,
Jonathan Cameron <jic23@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
David Lechner <dlechner@baylibre.com>,
linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Dumitru Ceclan <mitrutzceclan@gmail.com>
Subject: [PATCH v2 1/9] dt-bindings: adc: ad7173: add support for ad411x
Date: Tue, 14 May 2024 10:22:46 +0300 [thread overview]
Message-ID: <20240514-ad4111-v2-1-29be6a55efb5@analog.com> (raw)
In-Reply-To: <20240514-ad4111-v2-0-29be6a55efb5@analog.com>
Add support for: AD4111, AD4112, AD4114, AD4115, AD4116.
AD411x family ADCs support a VCOM pin, dedicated for single-ended usage.
AD4111/AD4112 support current channels, usage is implemented by
specifying channel reg values bigger than 15.
Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com>
---
.../devicetree/bindings/iio/adc/adi,ad7173.yaml | 118 ++++++++++++++++++++-
1 file changed, 117 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml
index ea6cfcd0aff4..6cc3514f5ed8 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml
@@ -19,7 +19,18 @@ description: |
primarily for measurement of signals close to DC but also delivers
outstanding performance with input bandwidths out to ~10kHz.
+ Analog Devices AD411x ADC's:
+ The AD411X family encompasses a series of low power, low noise, 24-bit,
+ sigma-delta analog-to-digital converters that offer a versatile range of
+ specifications. They integrate an analog front end suitable for processing
+ fully differential/single-ended and bipolar voltage inputs.
+
Datasheets for supported chips:
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD4111.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD4112.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD4114.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD4115.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD4116.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/AD7172-2.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/AD7172-4.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/AD7173-8.pdf
@@ -31,6 +42,11 @@ description: |
properties:
compatible:
enum:
+ - adi,ad4111
+ - adi,ad4112
+ - adi,ad4114
+ - adi,ad4115
+ - adi,ad4116
- adi,ad7172-2
- adi,ad7172-4
- adi,ad7173-8
@@ -129,6 +145,31 @@ patternProperties:
maximum: 15
diff-channels:
+ description: |
+ For using current channels specify select the current inputs
+ and enable the adi,current-channel property.
+
+ Family AD411x supports a dedicated VCOM voltage input.
+ To select it set the second channel to 16.
+ (VIN2, VCOM) -> diff-channels = <2 16>
+
+ There are special values that can be selected besides the voltage
+ analog inputs:
+ 21: REF+
+ 22: REF−
+ Supported only by AD7172-2, AD7172-4, AD7175-2, AD7175-8, AD7177-2:
+ 19: ((AVDD1 − AVSS)/5)+
+ 20: ((AVDD1 − AVSS)/5)−
+ Supported only by AD4111, AD4112:
+ 12: IIN3+
+ 11: IIN3−
+ 13: IIN2+
+ 10: IIN2−
+ 14: IIN1+
+ 9: IIN1−
+ 15: IIN0+
+ 8: IIN0−
+
items:
minimum: 0
maximum: 31
@@ -154,6 +195,23 @@ patternProperties:
- avdd
default: refout-avss
+ adi,current-channel:
+ description: |
+ Signal that the selected inputs are current channels.
+ Only available on AD4111 and AD4112.
+ type: boolean
+
+ adi,channel-type:
+ description:
+ Used to differentiate between different channel types as the device
+ register configurations are the same for all usage types.
+ $ref: /schemas/types.yaml#/definitions/string
+ enum:
+ - single-ended
+ - pseudo-differential
+ - differential
+ default: differential
+
required:
- reg
- diff-channels
@@ -166,7 +224,6 @@ allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#
# Only ad7172-4, ad7173-8 and ad7175-8 support vref2
- # Other models have [0-3] channel registers
- if:
properties:
compatible:
@@ -187,6 +244,37 @@ allOf:
- vref
- refout-avss
- avdd
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - adi,ad4114
+ - adi,ad4115
+ - adi,ad4116
+ - adi,ad7173-8
+ - adi,ad7175-8
+ then:
+ patternProperties:
+ "^channel@[0-9a-f]$":
+ properties:
+ reg:
+ maximum: 15
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - adi,ad7172-2
+ - adi,ad7175-2
+ - adi,ad7176-2
+ - adi,ad7177-2
+ then:
+ patternProperties:
+ "^channel@[0-9a-f]$":
+ properties:
reg:
maximum: 3
@@ -210,6 +298,34 @@ allOf:
required:
- adi,reference-select
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - adi,ad4111
+ - adi,ad4112
+ - adi,ad4114
+ - adi,ad4115
+ - adi,ad4116
+ then:
+ properties:
+ avdd2-supply: false
+
+ - if:
+ properties:
+ compatible:
+ not:
+ contains:
+ enum:
+ - adi,ad4111
+ - adi,ad4112
+ then:
+ patternProperties:
+ "^channel@[0-9a-f]$":
+ properties:
+ adi,current-channel: false
+
- if:
anyOf:
- required: [clock-names]
--
2.43.0
next prev parent reply other threads:[~2024-05-14 7:22 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-14 7:22 [PATCH v2 0/9] Add support for AD411x Dumitru Ceclan
2024-05-14 7:22 ` Dumitru Ceclan [this message]
2024-05-14 7:22 ` [PATCH v2 2/9] iio: adc: ad7173: fix buffers enablement for ad7176-2 Dumitru Ceclan
2024-05-14 7:22 ` [PATCH v2 3/9] iio: adc: ad7173: refactor channel configuration parsing Dumitru Ceclan
2024-05-14 7:22 ` [PATCH v2 4/9] iio: adc: ad7173: refactor ain and vref selection Dumitru Ceclan
2024-05-14 7:22 ` [PATCH v2 5/9] iio: adc: ad7173: add support for special inputs Dumitru Ceclan
2024-05-14 7:22 ` [PATCH v2 6/9] iio: adc: ad7173: Add ad7173_device_info names Dumitru Ceclan
2024-05-14 7:22 ` [PATCH v2 7/9] iio: adc: ad7173: Remove index from temp channel Dumitru Ceclan
2024-05-14 7:22 ` [PATCH v2 8/9] iio: adc: ad7173: Add support for AD411x devices Dumitru Ceclan
2024-05-14 7:22 ` [PATCH v2 9/9] iio: adc: ad7173: Reduce device info struct size Dumitru Ceclan
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