Re: [PATCH v4 1/2] dt-bindings: iio: adc: Add dt-schema for AD7292

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On Fri, Nov 08, 2019 at 10:56:09AM -0300, Marcelo Schmitt wrote:
> Add a devicetree schema for AD7292 monitor and control system.
> 
> Signed-off-by: Marcelo Schmitt <marcelo.schmitt1@xxxxxxxxx>
> ---
> Changelog V3 -> V4:
> - updated SPDX identifier to GPL-2.0-only
> - changed maxitems constraint on channel property
> 
>  .../bindings/iio/adc/adi,ad7292.yaml          | 104 ++++++++++++++++++
>  MAINTAINERS                                   |   7 ++
>  2 files changed, 111 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
> new file mode 100644
> index 000000000000..b68be3aaf587
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
> @@ -0,0 +1,104 @@
> +# SPDX-License-Identifier: GPL-2.0-only

Sigh, I gave you the exact line to use:

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

I've said to dual license with (GPL-2.0-only OR BSD-2-Clause) and people 
think I mean to pick one. So now I just give the whole line. I don't 
know how to be clearer.

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/adi,ad7292.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices AD7292 10-Bit Monitor and Control System
> +
> +maintainers:
> +  - Marcelo Schmitt <marcelo.schmitt1@xxxxxxxxx>
> +
> +description: |
> +  Analog Devices AD7292 10-Bit Monitor and Control System with ADC, DACs,
> +  Temperature Sensor, and GPIOs
> +
> +  Specifications about the part can be found at:
> +    https://www.analog.com/media/en/technical-documentation/data-sheets/ad7292.pdf
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,ad7292
> +
> +  reg:
> +    maxItems: 1
> +
> +  vref-supply:
> +    description: |
> +      The regulator supply for ADC and DAC reference voltage.
> +
> +  spi-cpha: true
> +
> +  '#address-cells':
> +    const: 1
> +
> +  '#size-cells':
> +    const: 0
> +
> +required:
> +  - compatible
> +  - reg
> +  - spi-cpha
> +
> +patternProperties:
> +  "^channel@[0-7]$":
> +    type: object
> +    description: |
> +      Represents the external channels which are connected to the ADC.
> +      See Documentation/devicetree/bindings/iio/adc/adc.txt.
> +
> +    properties:
> +      reg:
> +        description: |
> +          The channel number. It can have up to 8 channels numbered from 0 to 7.
> +        items:
> +          maximum: 7

Not what I said either. A slight but important difference in that you 
are missing a '-' to make 'items' a list rather than a schema/dict.

Update dt-schema. This should give a warning now.

> +
> +      diff-channels:
> +        description: see Documentation/devicetree/bindings/iio/adc/adc.txt
> +        maxItems: 1
> +
> +    required:
> +      - reg
> +
> +examples:
> +  - |
> +    spi {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      ad7292: adc@0 {
> +        compatible = "adi,ad7292";
> +        reg = <0>;
> +        spi-max-frequency = <25000000>;
> +        vref-supply = <&adc_vref>;
> +        spi-cpha;
> +
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        channel@0 {
> +          reg = <0>;
> +          diff-channels = <0 1>;
> +        };
> +        channel@2 {
> +          reg = <2>;
> +        };
> +        channel@3 {
> +          reg = <3>;
> +        };
> +        channel@4 {
> +          reg = <4>;
> +        };
> +        channel@5 {
> +          reg = <5>;
> +        };
> +        channel@6 {
> +          reg = <6>;
> +        };
> +        channel@7 {
> +          reg = <7>;
> +        };
> +      };
> +    };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 32bf5f8116d0..5d00e871c4c6 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -813,6 +813,13 @@ S:	Supported
>  F:	drivers/iio/adc/ad7124.c
>  F:	Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt
>  
> +ANALOG DEVICES INC AD7292 DRIVER
> +M:	Marcelo Schmitt <marcelo.schmitt1@xxxxxxxxx>
> +L:	linux-iio@xxxxxxxxxxxxxxx
> +W:	http://ez.analog.com/community/linux-device-drivers
> +S:	Supported
> +F:	Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
> +
>  ANALOG DEVICES INC AD7606 DRIVER
>  M:	Stefan Popa <stefan.popa@xxxxxxxxxx>
>  L:	linux-iio@xxxxxxxxxxxxxxx
> -- 
> 2.23.0
> 



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