The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/iio/adc/ti,ads131e08.yaml

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    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,ads131e08.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Texas Instruments ADS131E0x 4-, 6- and 8-Channel ADCs
    8 
    9 maintainers:
   10   - Tomislav Denis <tomislav.denis@avl.com>
   11 
   12 description: |
   13   The ADS131E0x are a family of multichannel, simultaneous sampling,
   14   24-bit, delta-sigma, analog-to-digital converters (ADCs) with a
   15   built-in programmable gain amplifier (PGA), internal reference
   16   and an onboard oscillator.
   17   The communication with ADC chip is via the SPI bus (mode 1).
   18 
   19   https://www.ti.com/lit/ds/symlink/ads131e08.pdf
   20 
   21 properties:
   22   compatible:
   23     enum:
   24       - ti,ads131e04
   25       - ti,ads131e06
   26       - ti,ads131e08
   27 
   28   reg:
   29     maxItems: 1
   30 
   31   spi-max-frequency: true
   32 
   33   spi-cpha: true
   34 
   35   clocks:
   36     description: |
   37       Device tree identifier to the clock source (2.048 MHz).
   38       Note: clock source is selected using CLKSEL pin.
   39     maxItems: 1
   40 
   41   clock-names:
   42     items:
   43       - const: adc-clk
   44 
   45   interrupts:
   46     description: |
   47       IRQ line for the ADC data ready.
   48     maxItems: 1
   49 
   50   vref-supply:
   51     description: |
   52       Optional external voltage reference. If not supplied, internal voltage
   53       reference is used.
   54 
   55   ti,vref-internal:
   56     description: |
   57       Select the internal voltage reference value.
   58       0: 2.4V
   59       1: 4.0V
   60       If this field is left empty, 2.4V is selected.
   61       Note: internal voltage reference is used only if vref-supply is not supplied.
   62     $ref: /schemas/types.yaml#/definitions/uint32
   63     enum: [0, 1]
   64     default: 0
   65 
   66   '#address-cells':
   67     const: 1
   68 
   69   '#size-cells':
   70     const: 0
   71 
   72 required:
   73   - compatible
   74   - reg
   75   - spi-cpha
   76   - clocks
   77   - clock-names
   78   - interrupts
   79 
   80 patternProperties:
   81   "^channel@([0-7])$":
   82     $ref: "adc.yaml"
   83     type: object
   84     description: |
   85       Represents the external channels which are connected to the ADC.
   86 
   87     properties:
   88       reg:
   89         description: |
   90           The channel number.
   91           Up to 4 channels, numbered from 0 to 3 for ti,ads131e04.
   92           Up to 6 channels, numbered from 0 to 5 for ti,ads131e06.
   93           Up to 8 channels, numbered from 0 to 7 for ti,ads131e08.
   94         items:
   95           minimum: 0
   96           maximum: 7
   97 
   98       ti,gain:
   99         description: |
  100           The PGA gain value for the channel.
  101           If this field is left empty, PGA gain 1 is used.
  102         $ref: /schemas/types.yaml#/definitions/uint32
  103         enum: [1, 2, 4, 8, 12]
  104         default: 1
  105 
  106       ti,mux:
  107         description: |
  108           Channel input selection(muliplexer).
  109           0: Normal input.
  110           1: Input shorted to (VREFP + VREFN) / 2 (for offset or noise measurements).
  111           3: MVDD (for supply measurement)
  112           4: Temperature sensor
  113           If this field is left empty, normal input is selected.
  114         $ref: /schemas/types.yaml#/definitions/uint32
  115         enum: [0, 1, 3, 4]
  116         default: 0
  117 
  118     required:
  119       - reg
  120 
  121     additionalProperties: false
  122 
  123 additionalProperties: false
  124 
  125 examples:
  126   - |
  127     #include <dt-bindings/interrupt-controller/irq.h>
  128 
  129     spi {
  130       #address-cells = <1>;
  131       #size-cells = <0>;
  132 
  133       adc@0 {
  134         compatible = "ti,ads131e08";
  135         reg = <0>;
  136         spi-max-frequency = <1000000>;
  137         spi-cpha;
  138         clocks = <&clk2048k>;
  139         clock-names = "adc-clk";
  140         interrupt-parent = <&gpio5>;
  141         interrupts = <28 IRQ_TYPE_EDGE_FALLING>;
  142         vref-supply = <&adc_vref>;
  143 
  144         #address-cells = <1>;
  145         #size-cells = <0>;
  146 
  147         channel@0 {
  148           reg = <0>;
  149         };
  150 
  151         channel@1 {
  152           reg = <1>;
  153         };
  154 
  155         channel@2 {
  156           reg = <2>;
  157           ti,gain = <2>;
  158         };
  159 
  160         channel@3 {
  161           reg = <3>;
  162         };
  163 
  164         channel@4 {
  165           reg = <4>;
  166         };
  167 
  168         channel@5 {
  169           reg = <5>;
  170         };
  171 
  172         channel@6 {
  173           reg = <6>;
  174         };
  175 
  176         channel@7 {
  177           reg = <7>;
  178           ti,mux = <4>;
  179         };
  180       };
  181     };

Cache object: ee98e4ef07560e9f26a33f5e64302551


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