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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/contrib/device-tree/Bindings/iio/adc/amlogic,meson-saradc.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/iio/adc/amlogic,meson-saradc.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Amlogic Meson SAR (Successive Approximation Register) A/D converter

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maintainers:

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  - Martin Blumenstingl <martin.blumenstingl@googlemail.com>

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description:

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  Binding covers a range of ADCs found on Amlogic Meson SoCs.

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properties:

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  compatible:

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    oneOf:

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      - const: amlogic,meson-saradc

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      - items:

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          - enum:

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              - amlogic,meson8-saradc

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              - amlogic,meson8b-saradc

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              - amlogic,meson8m2-saradc

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              - amlogic,meson-gxbb-saradc

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              - amlogic,meson-gxl-saradc

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              - amlogic,meson-gxm-saradc

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              - amlogic,meson-axg-saradc

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              - amlogic,meson-g12a-saradc

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          - const: amlogic,meson-saradc

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  reg:

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    maxItems: 1

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  interrupts:

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    description: Interrupt indicates end of sampling.

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    maxItems: 1

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  clocks:

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    minItems: 2

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    maxItems: 4

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  clock-names:

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    minItems: 2

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    items:

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      - const: clkin

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      - const: core

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      - const: adc_clk

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      - const: adc_sel

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  vref-supply: true

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  "#io-channel-cells":

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    const: 1

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  amlogic,hhi-sysctrl:

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    $ref: /schemas/types.yaml#/definitions/phandle

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    description:

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      Syscon which contains the 5th bit of the TSC (temperature sensor

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      coefficient) on Meson8b and Meson8m2 (which used to calibrate the

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      temperature sensor)

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  nvmem-cells:

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    description: phandle to the temperature_calib eFuse cells

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    maxItems: 1

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  nvmem-cell-names:

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    const: temperature_calib

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  power-domains:

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    maxItems: 1

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allOf:

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  - if:

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      properties:

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        compatible:

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          contains:

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            enum:

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              - amlogic,meson8-saradc

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              - amlogic,meson8b-saradc

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              - amlogic,meson8m2-saradc

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    then:

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      properties:

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        clocks:

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          maxItems: 2

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        clock-names:

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          maxItems: 2

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    else:

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      properties:

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        nvmem-cells: false

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        mvmem-cel-names: false

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        clocks:

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          minItems: 4

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        clock-names:

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          minItems: 4

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  - if:

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      properties:

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        compatible:

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          contains:

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            enum:

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              - amlogic,meson8b-saradc

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              - amlogic,meson8m2-saradc

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    then:

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      properties:

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        amlogic,hhi-sysctrl: true

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    else:

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      properties:

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        amlogic,hhi-sysctrl: false

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required:

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  - compatible

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  - reg

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  - interrupts

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  - clocks

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  - clock-names

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  - "#io-channel-cells"

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additionalProperties: false

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examples:

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  - |

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    #include <dt-bindings/interrupt-controller/irq.h>

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    #include <dt-bindings/clock/gxbb-clkc.h>

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    #include <dt-bindings/interrupt-controller/arm-gic.h>

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    soc {

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        #address-cells = <2>;

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        #size-cells = <2>;

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        adc@8680 {

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            compatible = "amlogic,meson-gxl-saradc", "amlogic,meson-saradc";

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            #io-channel-cells = <1>;

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            reg = <0x0 0x8680 0x0 0x34>;

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            interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>;

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            clocks = <&xtal>,

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                <&clkc CLKID_SAR_ADC>,

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                <&clkc CLKID_SAR_ADC_CLK>,

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                <&clkc CLKID_SAR_ADC_SEL>;

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            clock-names = "clkin", "core", "adc_clk", "adc_sel";

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        };

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        adc@9680 {

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            compatible = "amlogic,meson8b-saradc", "amlogic,meson-saradc";

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            #io-channel-cells = <1>;

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            reg = <0x0 0x9680 0x0 0x34>;

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            interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>;

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            clocks = <&xtal>, <&clkc CLKID_SAR_ADC>;

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            clock-names = "clkin", "core";

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            nvmem-cells = <&tsens_caldata>;

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            nvmem-cell-names = "temperature_calib";

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            amlogic,hhi-sysctrl = <&hhi>;

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        };

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    };

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...

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