samsung,exynos-adc.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/iio/adc/samsung,exynos-adc.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Samsung Exynos Analog to Digital Converter (ADC)
    8 
    9 maintainers:
   10   - Krzysztof Kozlowski <krzk@kernel.org>
   11 
   12 properties:
   13   compatible:
   14     enum:
   15       - samsung,exynos-adc-v1                 # Exynos5250
   16       - samsung,exynos-adc-v2
   17       - samsung,exynos3250-adc
   18       - samsung,exynos4212-adc                # Exynos4212 and Exynos4412
   19       - samsung,exynos7-adc
   20       - samsung,s3c2410-adc
   21       - samsung,s3c2416-adc
   22       - samsung,s3c2440-adc
   23       - samsung,s3c2443-adc
   24       - samsung,s3c6410-adc
   25       - samsung,s5pv210-adc
   26 
   27   reg:
   28     maxItems: 1
   29 
   30   clocks:
   31     description:
   32       Phandle to ADC bus clock. For Exynos3250 additional clock is needed.
   33     minItems: 1
   34     maxItems: 2
   35 
   36   clock-names:
   37     description:
   38       Must contain clock names (adc, sclk) matching phandles in clocks
   39       property.
   40     minItems: 1
   41     maxItems: 2
   42 
   43   interrupts:
   44     description:
   45       ADC interrupt followed by optional touchscreen interrupt.
   46     minItems: 1
   47     maxItems: 2
   48 
   49   "#io-channel-cells":
   50     const: 1
   51 
   52   vdd-supply: true
   53 
   54   samsung,syscon-phandle:
   55     $ref: '/schemas/types.yaml#/definitions/phandle'
   56     description:
   57       Phandle to the PMU system controller node (to access the ADC_PHY
   58       register on Exynos3250/4x12/5250/5420/5800).
   59 
   60   has-touchscreen:
   61     description:
   62       If present, indicates that a touchscreen is connected and usable.
   63     type: boolean
   64 
   65 required:
   66   - compatible
   67   - reg
   68   - clocks
   69   - clock-names
   70   - interrupts
   71   - "#io-channel-cells"
   72   - vdd-supply
   73 
   74 additionalProperties:
   75   type: object
   76 
   77 allOf:
   78   - if:
   79       properties:
   80         compatible:
   81           contains:
   82             enum:
   83               - samsung,exynos-adc-v1
   84               - samsung,exynos-adc-v2
   85               - samsung,exynos3250-adc
   86               - samsung,exynos4212-adc
   87     then:
   88       required:
   89         - samsung,syscon-phandle
   90 
   91   - if:
   92       properties:
   93         compatible:
   94           contains:
   95             enum:
   96               - samsung,exynos3250-adc
   97     then:
   98       properties:
   99         clocks:
  100           minItems: 2
  101           maxItems: 2
  102         clock-names:
  103           items:
  104             - const: adc
  105             - const: sclk
  106     else:
  107       properties:
  108         clocks:
  109           minItems: 1
  110           maxItems: 1
  111         clock-names:
  112           items:
  113             - const: adc
  114 
  115   - if:
  116       required:
  117         - has-touchscreen
  118     then:
  119       properties:
  120         interrupts:
  121           minItems: 2
  122           maxItems: 2
  123 
  124 examples:
  125   - |
  126     adc: adc@12d10000 {
  127         compatible = "samsung,exynos-adc-v1";
  128         reg = <0x12d10000 0x100>;
  129         interrupts = <0 106 0>;
  130         #io-channel-cells = <1>;
  131 
  132         clocks = <&clock 303>;
  133         clock-names = "adc";
  134 
  135         vdd-supply = <&buck5_reg>;
  136         samsung,syscon-phandle = <&pmu_system_controller>;
  137 
  138         /* NTC thermistor is a hwmon device */
  139         thermistor {
  140             compatible = "murata,ncp15wb473";
  141             pullup-uv = <1800000>;
  142             pullup-ohm = <47000>;
  143             pulldown-ohm = <0>;
  144             io-channels = <&adc 4>;
  145           };
  146     };
  147 
  148   - |
  149     #include <dt-bindings/clock/exynos3250.h>
  150 
  151     adc@126c0000 {
  152         compatible = "samsung,exynos3250-adc";
  153         reg = <0x126C0000 0x100>;
  154         interrupts = <0 137 0>;
  155         #io-channel-cells = <1>;
  156 
  157         clocks = <&cmu CLK_TSADC>,
  158                  <&cmu CLK_SCLK_TSADC>;
  159         clock-names = "adc", "sclk";
  160 
  161         vdd-supply = <&buck5_reg>;
  162         samsung,syscon-phandle = <&pmu_system_controller>;
  163     };

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

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sys/contrib/device-tree/Bindings/iio/adc/samsung,exynos-adc.yaml