Documentation/devicetree/bindings/iio/adc/ti,ads1298.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/iio/adc/ti,ads1298.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Texas Instruments' ads1298 medical ADC chips
   8
   9 description: |
  10   Datasheet at: https://www.ti.com/product/ADS1298
  11   Bindings for this chip aren't complete.
  12
  13 maintainers:
  14   - Mike Looijmans <mike.looijmans@topic.nl>
  15
  16 properties:
  17   compatible:
  18     enum:
  19       - ti,ads1298
  20
  21   reg:
  22     maxItems: 1
  23
  24   spi-cpha: true
  25
  26   reset-gpios:
  27     maxItems: 1
  28
  29   avdd-supply:
  30     description:
  31       Analog power supply, voltage between AVDD and AVSS. When providing a
  32       symmetric +/- 2.5V, the regulator should report 5V.
  33
  34   vref-supply:
  35     description:
  36       Optional reference voltage. If omitted, internal reference is used,
  37       which is 2.4V when analog supply is below 4.4V, 4V otherwise.
  38
  39   clocks:
  40     description: Optional 2.048 MHz external source clock on CLK pin
  41     maxItems: 1
  42
  43   interrupts:
  44     description: Interrupt on DRDY pin, triggers on falling edge
  45     maxItems: 1
  46
  47   label: true
  48
  49 required:
  50   - compatible
  51   - reg
  52   - avdd-supply
  53   - interrupts
  54
  55 allOf:
  56   - $ref: /schemas/spi/spi-peripheral-props.yaml#
  57
  58 unevaluatedProperties: false
  59
  60 examples:
  61   - |
  62     #include <dt-bindings/gpio/gpio.h>
  63     #include <dt-bindings/interrupt-controller/irq.h>
  64     spi {
  65         #address-cells = <1>;
  66         #size-cells = <0>;
  67
  68         adc@1 {
  69           reg = <1>;
  70           compatible = "ti,ads1298";
  71           label = "ads1298-1-ecg";
  72           avdd-supply = <&reg_iso_5v_a>;
  73           clocks = <&clk_ads1298>;
  74           interrupt-parent = <&gpio0>;
  75           interrupts = <78 IRQ_TYPE_EDGE_FALLING>;
  76           spi-max-frequency = <20000000>;
  77           spi-cpha;
  78         };
  79     };
  80 ...