amlogic,meson-saradc.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/iio/adc/amlogic,meson-saradc.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Amlogic Meson SAR (Successive Approximation Register) A/D converter
    8 
    9 maintainers:
   10   - Martin Blumenstingl <martin.blumenstingl@googlemail.com>
   11 
   12 description:
   13   Binding covers a range of ADCs found on Amlogic Meson SoCs.
   14 
   15 properties:
   16   compatible:
   17     oneOf:
   18       - const: amlogic,meson-saradc
   19       - items:
   20           - enum:
   21               - amlogic,meson8-saradc
   22               - amlogic,meson8b-saradc
   23               - amlogic,meson8m2-saradc
   24               - amlogic,meson-gxbb-saradc
   25               - amlogic,meson-gxl-saradc
   26               - amlogic,meson-gxm-saradc
   27               - amlogic,meson-axg-saradc
   28               - amlogic,meson-g12a-saradc
   29           - const: amlogic,meson-saradc
   30 
   31   reg:
   32     maxItems: 1
   33 
   34   interrupts:
   35     description: Interrupt indicates end of sampling.
   36     maxItems: 1
   37 
   38   clocks:
   39     minItems: 2
   40     maxItems: 4
   41 
   42   clock-names:
   43     minItems: 2
   44     items:
   45       - const: clkin
   46       - const: core
   47       - const: adc_clk
   48       - const: adc_sel
   49 
   50   vref-supply: true
   51 
   52   "#io-channel-cells":
   53     const: 1
   54 
   55   amlogic,hhi-sysctrl:
   56     $ref: /schemas/types.yaml#/definitions/phandle
   57     description:
   58       Syscon which contains the 5th bit of the TSC (temperature sensor
   59       coefficient) on Meson8b and Meson8m2 (which used to calibrate the
   60       temperature sensor)
   61 
   62   nvmem-cells:
   63     description: phandle to the temperature_calib eFuse cells
   64     maxItems: 1
   65 
   66   nvmem-cell-names:
   67     const: temperature_calib
   68 
   69 allOf:
   70   - if:
   71       properties:
   72         compatible:
   73           contains:
   74             enum:
   75               - amlogic,meson8-saradc
   76               - amlogic,meson8b-saradc
   77               - amlogic,meson8m2-saradc
   78     then:
   79       properties:
   80         clocks:
   81           maxItems: 2
   82         clock-names:
   83           maxItems: 2
   84     else:
   85       properties:
   86         nvmem-cells: false
   87         mvmem-cel-names: false
   88         clocks:
   89           minItems: 4
   90         clock-names:
   91           minItems: 4
   92 
   93   - if:
   94       properties:
   95         compatible:
   96           contains:
   97             enum:
   98               - amlogic,meson8b-saradc
   99               - amlogic,meson8m2-saradc
  100     then:
  101       properties:
  102         amlogic,hhi-sysctrl: true
  103     else:
  104       properties:
  105         amlogic,hhi-sysctrl: false
  106 
  107 required:
  108   - compatible
  109   - reg
  110   - interrupts
  111   - clocks
  112   - clock-names
  113   - "#io-channel-cells"
  114 
  115 additionalProperties: false
  116 
  117 examples:
  118   - |
  119     #include <dt-bindings/interrupt-controller/irq.h>
  120     #include <dt-bindings/clock/gxbb-clkc.h>
  121     #include <dt-bindings/interrupt-controller/arm-gic.h>
  122     soc {
  123         #address-cells = <2>;
  124         #size-cells = <2>;
  125         adc@8680 {
  126             compatible = "amlogic,meson-gxl-saradc", "amlogic,meson-saradc";
  127             #io-channel-cells = <1>;
  128             reg = <0x0 0x8680 0x0 0x34>;
  129             interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>;
  130             clocks = <&xtal>,
  131                 <&clkc CLKID_SAR_ADC>,
  132                 <&clkc CLKID_SAR_ADC_CLK>,
  133                 <&clkc CLKID_SAR_ADC_SEL>;
  134             clock-names = "clkin", "core", "adc_clk", "adc_sel";
  135         };
  136         adc@9680 {
  137             compatible = "amlogic,meson8b-saradc", "amlogic,meson-saradc";
  138             #io-channel-cells = <1>;
  139             reg = <0x0 0x9680 0x0 0x34>;
  140             interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>;
  141             clocks = <&xtal>, <&clkc CLKID_SAR_ADC>;
  142             clock-names = "clkin", "core";
  143             nvmem-cells = <&tsens_caldata>;
  144             nvmem-cell-names = "temperature_calib";
  145             amlogic,hhi-sysctrl = <&hhi>;
  146         };
  147     };
  148 ...

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sys/contrib/device-tree/Bindings/iio/adc/amlogic,meson-saradc.yaml