fbe5956e88
ad7380-4 is the only device from ad738x family that doesn't have an
internal reference. Moreover its external reference is called REFIN in
the datasheet while all other use REFIO as an optional external
reference. If refio-supply is omitted the internal reference is
used.
Fix the binding by adding refin-supply and makes it required for
ad7380-4 only.
Fixes: 1a291cc8ee ("dt-bindings: iio: adc: ad7380: add support for ad738x-4 4 channels variants")
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Link: https://patch.msgid.link/20241022-ad7380-fix-supplies-v3-1-f0cefe1b7fa6@baylibre.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
182 lines
4.3 KiB
YAML
182 lines
4.3 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/iio/adc/adi,ad7380.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: Analog Devices Simultaneous Sampling Analog to Digital Converters
|
|
|
|
maintainers:
|
|
- Michael Hennerich <Michael.Hennerich@analog.com>
|
|
- Nuno Sá <nuno.sa@analog.com>
|
|
|
|
description: |
|
|
* https://www.analog.com/en/products/ad7380.html
|
|
* https://www.analog.com/en/products/ad7381.html
|
|
* https://www.analog.com/en/products/ad7383.html
|
|
* https://www.analog.com/en/products/ad7384.html
|
|
* https://www.analog.com/en/products/ad7386.html
|
|
* https://www.analog.com/en/products/ad7387.html
|
|
* https://www.analog.com/en/products/ad7388.html
|
|
* https://www.analog.com/en/products/ad7380-4.html
|
|
* https://www.analog.com/en/products/ad7381-4.html
|
|
* https://www.analog.com/en/products/ad7383-4.html
|
|
* https://www.analog.com/en/products/ad7384-4.html
|
|
* https://www.analog.com/en/products/ad7386-4.html
|
|
* https://www.analog.com/en/products/ad7387-4.html
|
|
* https://www.analog.com/en/products/ad7388-4.html
|
|
|
|
|
|
$ref: /schemas/spi/spi-peripheral-props.yaml#
|
|
|
|
properties:
|
|
compatible:
|
|
enum:
|
|
- adi,ad7380
|
|
- adi,ad7381
|
|
- adi,ad7383
|
|
- adi,ad7384
|
|
- adi,ad7386
|
|
- adi,ad7387
|
|
- adi,ad7388
|
|
- adi,ad7380-4
|
|
- adi,ad7381-4
|
|
- adi,ad7383-4
|
|
- adi,ad7384-4
|
|
- adi,ad7386-4
|
|
- adi,ad7387-4
|
|
- adi,ad7388-4
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
spi-max-frequency:
|
|
maximum: 80000000
|
|
spi-cpol: true
|
|
spi-cpha: true
|
|
|
|
vcc-supply:
|
|
description: A 3V to 3.6V supply that powers the chip.
|
|
|
|
vlogic-supply:
|
|
description:
|
|
A 1.65V to 3.6V supply for the logic pins.
|
|
|
|
refio-supply:
|
|
description:
|
|
A 2.5V to 3.3V supply for the external reference voltage. When omitted,
|
|
the internal 2.5V reference is used.
|
|
|
|
refin-supply:
|
|
description:
|
|
A 2.5V to 3.3V supply for external reference voltage, for ad7380-4 only.
|
|
|
|
aina-supply:
|
|
description:
|
|
The common mode voltage supply for the AINA- pin on pseudo-differential
|
|
chips.
|
|
|
|
ainb-supply:
|
|
description:
|
|
The common mode voltage supply for the AINB- pin on pseudo-differential
|
|
chips.
|
|
|
|
ainc-supply:
|
|
description:
|
|
The common mode voltage supply for the AINC- pin on pseudo-differential
|
|
chips.
|
|
|
|
aind-supply:
|
|
description:
|
|
The common mode voltage supply for the AIND- pin on pseudo-differential
|
|
chips.
|
|
|
|
interrupts:
|
|
description:
|
|
When the device is using 1-wire mode, this property is used to optionally
|
|
specify the ALERT interrupt.
|
|
maxItems: 1
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- vcc-supply
|
|
- vlogic-supply
|
|
|
|
unevaluatedProperties: false
|
|
|
|
allOf:
|
|
# pseudo-differential chips require common mode voltage supplies,
|
|
# true differential chips don't use them
|
|
- if:
|
|
properties:
|
|
compatible:
|
|
enum:
|
|
- adi,ad7383
|
|
- adi,ad7384
|
|
- adi,ad7383-4
|
|
- adi,ad7384-4
|
|
then:
|
|
required:
|
|
- aina-supply
|
|
- ainb-supply
|
|
else:
|
|
properties:
|
|
aina-supply: false
|
|
ainb-supply: false
|
|
- if:
|
|
properties:
|
|
compatible:
|
|
enum:
|
|
- adi,ad7383-4
|
|
- adi,ad7384-4
|
|
then:
|
|
required:
|
|
- ainc-supply
|
|
- aind-supply
|
|
else:
|
|
properties:
|
|
ainc-supply: false
|
|
aind-supply: false
|
|
|
|
# ad7380-4 uses refin-supply as external reference.
|
|
# All other chips from ad738x family use refio as optional external reference.
|
|
# When refio-supply is omitted, internal reference is used.
|
|
- if:
|
|
properties:
|
|
compatible:
|
|
enum:
|
|
- adi,ad7380-4
|
|
then:
|
|
properties:
|
|
refio-supply: false
|
|
required:
|
|
- refin-supply
|
|
else:
|
|
properties:
|
|
refin-supply: false
|
|
|
|
examples:
|
|
- |
|
|
#include <dt-bindings/interrupt-controller/irq.h>
|
|
|
|
spi {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
|
|
adc@0 {
|
|
compatible = "adi,ad7380";
|
|
reg = <0>;
|
|
|
|
spi-cpol;
|
|
spi-cpha;
|
|
spi-max-frequency = <80000000>;
|
|
|
|
interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
|
|
interrupt-parent = <&gpio0>;
|
|
|
|
vcc-supply = <&supply_3_3V>;
|
|
vlogic-supply = <&supply_3_3V>;
|
|
refio-supply = <&supply_2_5V>;
|
|
};
|
|
};
|