Re: [PATCH v3 1/2] dt-bindings: iio: Add MCP9600 thermocouple EMF converter bindings

[Jonathan Cameron <jic23@kernel.org>]

On Fri,  3 Mar 2023 16:41:08 -0800
Andrew Hepp <andrew.hepp@ahepp.dev> wrote:

> Add support for the MCP9600 thermocouple EMF converter.
> 
> Datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP960X-Data-Sheet-20005426.pdf
> Signed-off-by: Andrew Hepp <andrew.hepp@ahepp.dev>
> ---
> Changes for v3:
> - Added dt-bindings
> ---
>  .../iio/temperature/microchip,mcp9600.yaml    | 72 +++++++++++++++++++
>  1 file changed, 72 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/temperature/microchip,mcp9600.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/temperature/microchip,mcp9600.yaml b/Documentation/devicetree/bindings/iio/temperature/microchip,mcp9600.yaml
> new file mode 100644
> index 000000000000..584d0ae42502
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/temperature/microchip,mcp9600.yaml
> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/temperature/microchip,mcp9600.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Microchip MCP9600 thermocouple EMF converter
> +
> +maintainers:
> +  - Andrew Hepp <andrew.hepp@ahepp.dev>
> +
> +description: |
> +  https://ww1.microchip.com/downloads/en/DeviceDoc/MCP960X-Data-Sheet-20005426.pdf
> +
> +properties:
> +  compatible:
> +    const: microchip,mcp9600
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    minItems: 1
> +    maxItems: 6
> +
> +  interrupt-names:
> +    minItems: 1
> +    maxItems: 6
> +    items:
> +      enum:
> +        - open

Perhaps make it more explicit?  open-circuit

> +        - short

Same here? short-circuit

> +        - alert1
> +        - alert2
> +        - alert3
> +        - alert4
> +
> +  thermocouple-type:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      Type of thermocouple (THERMOCOUPLE_TYPE_K if omitted).
> +      Use defines in dt-bindings/iio/temperature/thermocouple.h.
> +      Supported types are B, E, J, K, N, R, S, T.
> +
> +  vdd-supply:
> +    description: Regulator that provides power to the sensor.

I'd count that one as so common it doesn't need a description.
    vdd-supply: true

would be sufficient.



> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/iio/temperature/thermocouple.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        mcp9600@60 {
> +            compatible = "microchip,mcp9600";
> +            reg = <0x60>;
> +            interrupt-parent = <&gpio>;
> +            interrupts = <25 IRQ_TYPE_EDGE_RISING>;
> +            interrupt-names = "open";
> +            thermocouple-type = <THERMOCOUPLE_TYPE_K>;
> +            vdd-supply = <&vdd>;
> +        };
> +    };