Add dt bindings for AD7779 8-channel, simultaneous sampling ADC
family with eight full Σ-Δ ADCs on chip and ultra-low input
current to allow direct sensor connection.
Signed-off-by: Ramona Alexandra Nechita <ramona.nechita@analog.com>
---
.../bindings/iio/adc/adi,ad7779.yaml | 110 ++++++++++++++++++
1 file changed, 110 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml
new file mode 100644
index 000000000000..044f92f39cfa
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml
@@ -0,0 +1,110 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ad7779.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD777X family 8-Channel, 24-Bit, Simultaneous Sampling ADCs
+
+maintainers:
+ - Ramona Nechita <ramona.nechita@analog.com>
+
+description: |
+ The AD777X family consist of 8-channel, simultaneous sampling analog-to-
+ digital converter (ADC). Eight full Σ-Δ ADCs are on-chip. The
+ AD7771 provides an ultralow input current to allow direct sensor
+ connection. Each input channel has a programmable gain stage
+ allowing gains of 1, 2, 4, and 8 to map lower amplitude sensor
+ outputs into the full-scale ADC input range, maximizing the
+ dynamic range of the signal chain.
+
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7770.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7771.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7779.pdf
+
+$ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+ compatible:
+ enum:
+ - adi,ad7770
+ - adi,ad7771
+ - adi,ad7779
+
+ reg:
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ clocks:
+ maxItems: 1
+
+ avdd1-supply:
+ description: Front-End analog supply AVDD1. Can be used as conversion ref.
+
+ avdd2-supply:
+ description: AVDD2 Analog Supply from 2.2 V to 3.6 V.
+
+ avdd4-supply:
+ description: AVDD4 SAR Analog Supply and Reference Source.
+
+ interrupts:
+ minItems: 1
+ items:
+ - description: |
+ adc_rdy: Interrupt line for DRDY signal which indicates the end of
+ conversion independently of the interface selected to read back the
+ Σ-∆ conversion.
+ - description: |
+ Alert: The chip includes self diagnostic features to guarantee the
+ correct operation. If an error is detected, the ALERT pin is pulled
+ high to generate an external interruption to the controller.
+
+ interrupt-names:
+ minItems: 1
+ maxItems: 2
+ items:
+ enum:
+ - adc_rdy
+ - alert
+
+ start-gpios:
+ description:
+ Pin that controls start synchronization pulse.
+ maxItems: 1
+
+ reset-gpios:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - interrupts
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@0 {
+ compatible = "adi,ad7779";
+ reg = <0>;
+ start-gpios = <&gpio0 87 GPIO_ACTIVE_LOW>;
+ reset-gpios = <&gpio0 93 GPIO_ACTIVE_LOW>;
+ interrupt-parent = <&intc>;
+ interrupts = <0 56 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "adc_rdy";
+ clocks = <&adc_clk>;
+ };
+ };
+...
--
2.43.0
On 14/10/2024 16:31, Ramona Alexandra Nechita wrote: > Add dt bindings for AD7779 8-channel, simultaneous sampling ADC > family with eight full Σ-Δ ADCs on chip and ultra-low input > current to allow direct sensor connection. > > Signed-off-by: Ramona Alexandra Nechita <ramona.nechita@analog.com> <form letter> This is a friendly reminder during the review process. It looks like you received a tag and forgot to add it. If you do not know the process, here is a short explanation: Please add Acked-by/Reviewed-by/Tested-by tags when posting new versions, under or above your Signed-off-by tag. Tag is "received", when provided in a message replied to you on the mailing list. Tools like b4 can help here. However, there's no need to repost patches *only* to add the tags. The upstream maintainer will do that for tags received on the version they apply. https://elixir.bootlin.com/linux/v6.5-rc3/source/Documentation/process/submitting-patches.rst#L577 If a tag was not added on purpose, please state why and what changed. </form letter> Best regards, Krzysztof
On Mon, 14 Oct 2024 19:59:47 +0200 Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> wrote: > On 14/10/2024 16:31, Ramona Alexandra Nechita wrote: > > Add dt bindings for AD7779 8-channel, simultaneous sampling ADC > > family with eight full Σ-Δ ADCs on chip and ultra-low input > > current to allow direct sensor connection. > > > > Signed-off-by: Ramona Alexandra Nechita <ramona.nechita@analog.com> > > <form letter> > This is a friendly reminder during the review process. > > It looks like you received a tag and forgot to add it. > > If you do not know the process, here is a short explanation: > Please add Acked-by/Reviewed-by/Tested-by tags when posting new > versions, under or above your Signed-off-by tag. Tag is "received", when > provided in a message replied to you on the mailing list. Tools like b4 > can help here. However, there's no need to repost patches *only* to add > the tags. The upstream maintainer will do that for tags received on the > version they apply. > > https://elixir.bootlin.com/linux/v6.5-rc3/source/Documentation/process/submitting-patches.rst#L577 > > If a tag was not added on purpose, please state why and what changed. > </form letter> > > Best regards, > Krzysztof > If we go around again, please also fix the part number in the patch title. Jonathan
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