# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/iio/adc/ti,ads1298.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Texas Instruments' ads1298 medical ADC chips
description: |
Datasheet at:
https://www.ti.com/product/ADS1298
Bindings for this chip aren't complete.
maintainers:
- Mike Looijmans <mike.looijmans@topic.nl>
properties:
compatible:
enum:
- ti,ads1298
reg:
maxItems: 1
spi-cpha: true
reset-gpios:
maxItems: 1
avdd-supply:
description:
Analog power supply, voltage between AVDD and AVSS. When providing a
symmetric +/- 2.5V, the regulator should report 5V.
vref-supply:
description:
Optional reference voltage. If omitted, internal reference is used,
which is 2.4V when analog supply is below 4.4V, 4V otherwise.
clocks:
description: Optional 2.048 MHz external source clock on CLK pin
maxItems: 1
interrupts:
description: Interrupt on DRDY pin, triggers on falling edge
maxItems: 1
label: true
required:
- compatible
- reg
- avdd-supply
- interrupts
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
adc@1 {
reg = <1>;
compatible = "ti,ads1298";
label = "ads1298-1-ecg";
avdd-supply = <®_iso_5v_a>;
clocks = <&clk_ads1298>;
interrupt-parent = <&gpio0>;
interrupts = <78 IRQ_TYPE_EDGE_FALLING>;
spi-max-frequency = <20000000>;
spi-cpha;
};
};
...
