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authorMircea Caprioru <mircea.caprioru@analog.com>2019-08-18 19:43:54 +0100
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2019-08-18 19:43:54 +0100
commitf7356e47032c5f0e9ada486f1d7a90468f2b67da (patch)
treeeffd2a05cffc8bd8c52f05ec6419ef63be08ce4a /Documentation/devicetree/bindings
parent77f6a23092c0f5fcf85c6c8894ccc436d8d0d9aa (diff)
downloadlinux-f7356e47032c5f0e9ada486f1d7a90468f2b67da.tar.gz
dt-bindings: iio: adc: ad7192: Add binding documentation for AD7192
This patch add device tree binding documentation for AD7192 adc in YAML format. Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'Documentation/devicetree/bindings')
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+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 Analog Devices Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/bindings/iio/adc/adi,ad7192.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD7192 ADC device driver
+
+maintainers:
+ - Michael Hennerich <michael.hennerich@analog.com>
+
+description: |
+ Bindings for the Analog Devices AD7192 ADC device. Datasheet can be
+ found here:
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD7192.pdf
+
+properties:
+ compatible:
+ enum:
+ - adi,ad7190
+ - adi,ad7192
+ - adi,ad7193
+ - adi,ad7195
+
+ reg:
+ maxItems: 1
+
+ spi-cpol: true
+
+ spi-cpha: true
+
+ clocks:
+ maxItems: 1
+ description: phandle to the master clock (mclk)
+
+ clock-names:
+ items:
+ - const: mclk
+
+ interrupts:
+ maxItems: 1
+
+ dvdd-supply:
+ description: DVdd voltage supply
+ items:
+ - const: dvdd
+
+ avdd-supply:
+ description: AVdd voltage supply
+ items:
+ - const: avdd
+
+ adi,rejection-60-Hz-enable:
+ description: |
+ This bit enables a notch at 60 Hz when the first notch of the sinc
+ filter is at 50 Hz. When REJ60 is set, a filter notch is placed at
+ 60 Hz when the sinc filter first notch is at 50 Hz. This allows
+ simultaneous 50 Hz/ 60 Hz rejection.
+ type: boolean
+
+ adi,refin2-pins-enable:
+ description: |
+ External reference applied between the P1/REFIN2(+) and P0/REFIN2(−) pins.
+ type: boolean
+
+ adi,buffer-enable:
+ description: |
+ Enables the buffer on the analog inputs. If cleared, the analog inputs
+ are unbuffered, lowering the power consumption of the device. If this
+ bit is set, the analog inputs are buffered, allowing the user to place
+ source impedances on the front end without contributing gain errors to
+ the system.
+ type: boolean
+
+ adi,burnout-currents-enable:
+ description: |
+ When this bit is set to 1, the 500 nA current sources in the signal
+ path are enabled. When BURN = 0, the burnout currents are disabled.
+ The burnout currents can be enabled only when the buffer is active
+ and when chop is disabled.
+ type: boolean
+
+ bipolar:
+ description: see Documentation/devicetree/bindings/iio/adc/adc.txt
+ type: boolean
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - interrupts
+ - dvdd-supply
+ - avdd-supply
+ - spi-cpol
+ - spi-cpha
+
+examples:
+ - |
+ spi0 {
+ adc@0 {
+ compatible = "adi,ad7192";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ spi-cpol;
+ spi-cpha;
+ clocks = <&ad7192_mclk>;
+ clock-names = "mclk";
+ #interrupt-cells = <2>;
+ interrupts = <25 0x2>;
+ interrupt-parent = <&gpio>;
+ dvdd-supply = <&dvdd>;
+ avdd-supply = <&avdd>;
+
+ adi,refin2-pins-enable;
+ adi,rejection-60-Hz-enable;
+ adi,buffer-enable;
+ adi,burnout-currents-enable;
+ };
+ };