mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-07 15:07:13 -04:00
dt-bindings: iio: adc: add AD7191
AD7191 is a pin-programmable, ultra-low noise 24-bit sigma-delta ADC designed for precision bridge sensor measurements. It features two differential analog input channels, selectable output rates, programmable gain, internal temperature sensor and simultaneous 50Hz/60Hz rejection. Signed-off-by: Alisa-Dariana Roman <alisa.roman@analog.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: David Lechner<dlechner@baylibre.com> Link: https://patch.msgid.link/20250228141327.262488-2-alisa.roman@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alisa-Dariana Roman
committed by
Jonathan Cameron
Jonathan Cameron
parent
21ce1ce043
commit
f52b5daf39
149
Documentation/devicetree/bindings/iio/adc/adi,ad7191.yaml
Normal file
149
Documentation/devicetree/bindings/iio/adc/adi,ad7191.yaml
Normal file
@@ -0,0 +1,149 @@
|
||||
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
|
||||
# Copyright 2025 Analog Devices Inc.
|
||||
%YAML 1.2
|
||||
---
|
||||
$id: http://devicetree.org/schemas/iio/adc/adi,ad7191.yaml#
|
||||
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||||
|
||||
title: Analog Devices AD7191 ADC
|
||||
|
||||
maintainers:
|
||||
- Alisa-Dariana Roman <alisa.roman@analog.com>
|
||||
|
||||
description: |
|
||||
Bindings for the Analog Devices AD7191 ADC device. Datasheet can be
|
||||
found here:
|
||||
https://www.analog.com/media/en/technical-documentation/data-sheets/AD7191.pdf
|
||||
The device's PDOWN pin must be connected to the SPI controller's chip select
|
||||
pin.
|
||||
|
||||
properties:
|
||||
compatible:
|
||||
enum:
|
||||
- adi,ad7191
|
||||
|
||||
reg:
|
||||
maxItems: 1
|
||||
|
||||
spi-cpol: true
|
||||
|
||||
spi-cpha: true
|
||||
|
||||
clocks:
|
||||
maxItems: 1
|
||||
description:
|
||||
Must be present when CLKSEL pin is tied HIGH to select external clock
|
||||
source (either a crystal between MCLK1 and MCLK2 pins, or a
|
||||
CMOS-compatible clock driving MCLK2 pin). Must be absent when CLKSEL pin
|
||||
is tied LOW to use the internal 4.92MHz clock.
|
||||
|
||||
interrupts:
|
||||
maxItems: 1
|
||||
|
||||
avdd-supply:
|
||||
description: AVdd voltage supply
|
||||
|
||||
dvdd-supply:
|
||||
description: DVdd voltage supply
|
||||
|
||||
vref-supply:
|
||||
description: Vref voltage supply
|
||||
|
||||
odr-gpios:
|
||||
description:
|
||||
ODR1 and ODR2 pins for output data rate selection. Should be defined if
|
||||
adi,odr-value is absent.
|
||||
minItems: 2
|
||||
maxItems: 2
|
||||
|
||||
adi,odr-value:
|
||||
$ref: /schemas/types.yaml#/definitions/uint32
|
||||
description: |
|
||||
Should be present if ODR pins are pin-strapped. Possible values:
|
||||
120 Hz (ODR1=0, ODR2=0)
|
||||
60 Hz (ODR1=0, ODR2=1)
|
||||
50 Hz (ODR1=1, ODR2=0)
|
||||
10 Hz (ODR1=1, ODR2=1)
|
||||
If defined, odr-gpios must be absent.
|
||||
enum: [120, 60, 50, 10]
|
||||
|
||||
pga-gpios:
|
||||
description:
|
||||
PGA1 and PGA2 pins for gain selection. Should be defined if adi,pga-value
|
||||
is absent.
|
||||
minItems: 2
|
||||
maxItems: 2
|
||||
|
||||
adi,pga-value:
|
||||
$ref: /schemas/types.yaml#/definitions/uint32
|
||||
description: |
|
||||
Should be present if PGA pins are pin-strapped. Possible values:
|
||||
Gain 1 (PGA1=0, PGA2=0)
|
||||
Gain 8 (PGA1=0, PGA2=1)
|
||||
Gain 64 (PGA1=1, PGA2=0)
|
||||
Gain 128 (PGA1=1, PGA2=1)
|
||||
If defined, pga-gpios must be absent.
|
||||
enum: [1, 8, 64, 128]
|
||||
|
||||
temp-gpios:
|
||||
description: TEMP pin for temperature sensor enable.
|
||||
maxItems: 1
|
||||
|
||||
chan-gpios:
|
||||
description: CHAN pin for input channel selection.
|
||||
maxItems: 1
|
||||
|
||||
required:
|
||||
- compatible
|
||||
- reg
|
||||
- interrupts
|
||||
- avdd-supply
|
||||
- dvdd-supply
|
||||
- vref-supply
|
||||
- spi-cpol
|
||||
- spi-cpha
|
||||
- temp-gpios
|
||||
- chan-gpios
|
||||
|
||||
allOf:
|
||||
- $ref: /schemas/spi/spi-peripheral-props.yaml#
|
||||
- oneOf:
|
||||
- required:
|
||||
- adi,odr-value
|
||||
- required:
|
||||
- odr-gpios
|
||||
- oneOf:
|
||||
- required:
|
||||
- adi,pga-value
|
||||
- required:
|
||||
- pga-gpios
|
||||
|
||||
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,ad7191";
|
||||
reg = <0>;
|
||||
spi-max-frequency = <1000000>;
|
||||
spi-cpol;
|
||||
spi-cpha;
|
||||
clocks = <&ad7191_mclk>;
|
||||
interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
|
||||
interrupt-parent = <&gpio>;
|
||||
avdd-supply = <&avdd>;
|
||||
dvdd-supply = <&dvdd>;
|
||||
vref-supply = <&vref>;
|
||||
adi,pga-value = <1>;
|
||||
odr-gpios = <&gpio 23 GPIO_ACTIVE_HIGH>, <&gpio 24 GPIO_ACTIVE_HIGH>;
|
||||
temp-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
|
||||
chan-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
|
||||
};
|
||||
};
|
||||
@@ -1346,6 +1346,13 @@ W: http://ez.analog.com/community/linux-device-drivers
|
||||
F: Documentation/devicetree/bindings/iio/adc/adi,ad7091r*
|
||||
F: drivers/iio/adc/ad7091r*
|
||||
|
||||
ANALOG DEVICES INC AD7191 DRIVER
|
||||
M: Alisa-Dariana Roman <alisa.roman@analog.com>
|
||||
L: linux-iio@vger.kernel.org
|
||||
S: Supported
|
||||
W: https://ez.analog.com/linux-software-drivers
|
||||
F: Documentation/devicetree/bindings/iio/adc/adi,ad7191.yaml
|
||||
|
||||
ANALOG DEVICES INC AD7192 DRIVER
|
||||
M: Alisa-Dariana Roman <alisa.roman@analog.com>
|
||||
L: linux-iio@vger.kernel.org
|
||||
|
||||
Reference in New Issue
Block a user