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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/adc/adi,ad7625.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices Fast PulSAR Analog to Digital Converters
maintainers:
- Michael Hennerich <Michael.Hennerich@analog.com>
- Nuno Sá <nuno.sa@analog.com>
description: |
A family of single channel differential analog to digital converters.
* https://www.analog.com/en/products/ad7625.html
* https://www.analog.com/en/products/ad7626.html
* https://www.analog.com/en/products/ad7960.html
* https://www.analog.com/en/products/ad7961.html
properties:
compatible:
enum:
- adi,ad7625
- adi,ad7626
- adi,ad7960
- adi,ad7961
vdd1-supply: true
vdd2-supply: true
vio-supply: true
ref-supply:
description:
Voltage regulator for the external reference voltage (REF).
refin-supply:
description:
Voltage regulator for the reference buffer input (REFIN).
clocks:
description:
The clock connected to the CLK pins, gated by the clk_gate PWM.
maxItems: 1
pwms:
items:
- description: PWM connected to the CNV input on the ADC.
- description: PWM that gates the clock connected to the ADC's CLK input.
pwm-names:
items:
- const: cnv
- const: clk_gate
io-backends:
description:
The AXI ADC IP block connected to the D+/- and DCO+/- lines of the
ADC. An example backend can be found at
http://analogdevicesinc.github.io/hdl/projects/pulsar_lvds/index.html.
maxItems: 1
adi,no-dco:
$ref: /schemas/types.yaml#/definitions/flag
description:
Indicates the wiring of the DCO+/- lines. If true, then they are
grounded and the device is in self-clocked mode. If this is not
present, then the device is in echoed clock mode.
adi,en0-always-on:
$ref: /schemas/types.yaml#/definitions/flag
description:
Indicates if EN0 is hard-wired to the high state. If neither this
nor en0-gpios are present, then EN0 is hard-wired low.
adi,en1-always-on:
$ref: /schemas/types.yaml#/definitions/flag
description:
Indicates if EN1 is hard-wired to the high state. If neither this
nor en1-gpios are present, then EN1 is hard-wired low.
adi,en2-always-on:
$ref: /schemas/types.yaml#/definitions/flag
description:
Indicates if EN2 is hard-wired to the high state. If neither this
nor en2-gpios are present, then EN2 is hard-wired low.
adi,en3-always-on:
$ref: /schemas/types.yaml#/definitions/flag
description:
Indicates if EN3 is hard-wired to the high state. If neither this
nor en3-gpios are present, then EN3 is hard-wired low.
en0-gpios:
description:
Configurable EN0 pin.
en1-gpios:
description:
Configurable EN1 pin.
en2-gpios:
description:
Configurable EN2 pin.
en3-gpios:
description:
Configurable EN3 pin.
required:
- compatible
- vdd1-supply
- vdd2-supply
- vio-supply
- clocks
- pwms
- pwm-names
- io-backends
allOf:
- if:
required:
- ref-supply
then:
properties:
refin-supply: false
- if:
required:
- refin-supply
then:
properties:
ref-supply: false
- if:
properties:
compatible:
contains:
enum:
- adi,ad7625
- adi,ad7626
then:
properties:
en2-gpios: false
en3-gpios: false
adi,en2-always-on: false
adi,en3-always-on: false
- if:
properties:
compatible:
contains:
enum:
- adi,ad7960
- adi,ad7961
then:
# ad796x parts must have one of the two supplies
oneOf:
- required: [ref-supply]
- required: [refin-supply]
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
adc {
compatible = "adi,ad7625";
vdd1-supply = <&supply_5V>;
vdd2-supply = <&supply_2_5V>;
vio-supply = <&supply_2_5V>;
io-backends = <&axi_adc>;
clocks = <&ref_clk>;
pwms = <&axi_pwm_gen 0 0>, <&axi_pwm_gen 1 0>;
pwm-names = "cnv", "clk_gate";
en0-gpios = <&gpio0 86 GPIO_ACTIVE_HIGH>;
en1-gpios = <&gpio0 87 GPIO_ACTIVE_HIGH>;
};
|
