linux-kernel - Re: [PATCH 2/2] dt-bindings: iio: chemical: Add bindings for Dynament Premier series single gas sensor

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Date:   Sun, 15 Dec 2019 17:19:49 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     ruantu <mtwget@...il.com>
Cc:     knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] dt-bindings: iio: chemical: Add bindings for
 Dynament Premier series single gas sensor

On Tue, 10 Dec 2019 13:37:44 +0800
ruantu <mtwget@...il.com> wrote:

> Dynament Premier series single gas sensor.
> 
> Signed-off-by: ruantu <mtwget@...il.com>
> ---
>  .../iio/chemical/dynament,premier.yaml        | 43 +++++++++++++++++++
>  .../devicetree/bindings/vendor-prefixes.yaml  |  2 +
>  MAINTAINERS                                   |  1 +
>  3 files changed, 46 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/chemical/dynament,premier.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/chemical/dynament,premier.yaml b/Documentation/devicetree/bindings/iio/chemical/dynament,premier.yaml
> new file mode 100644
> index 000000000000..076ae9d90cee
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/chemical/dynament,premier.yaml
> @@ -0,0 +1,43 @@
> +# SPDX-License-Identifier: GPL-2.0

The dt maintainers are asking if possible for all new bindings to be dual licensed
with BSD as it makes them easier to reuse outside linux.

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/chemical/dynament,premier.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Dynament Premier series single gas sensor
> +
> +maintainers:
> +  - ruantu <mtwget@...il.com>
> +
> +description: |
> +  single gas sensor capable of measuring gas concentration of dust
> +  particles, multi-gas sensor are not supported.
> +
> +  Specifications about the sensor can be found at:
> +    https://www.dynament.com/_webedit/uploaded-files/All%20Files/SIL%20Data/tds0045_1.44.pdf, read chapter 1.5.2 Read live data simple
> +
> +properties:
> +  compatible:
> +    enum:
> +      - dynament,premier
> +
> +  vcc-supply:
> +    description: regulator that provides power to the sensor
> +
> +  reset-gpios:
> +    description: GPIO connected to the RESET line
> +    maxItems: 1
Good to have the regulator and reset defined from the start.  It may be worth adding
the regulator enable to the driver.  Reset is actually optional I assume whereas
power isn't (it's just a question of whether it is already turned on or not!)
> +
> +required:
> +  - compatible
> +
> +examples:
> +  - |
> +    serial {
> +      single-gas-sensor {
> +        compatible = "dynament,premier";
> +        vcc-supply = <&reg_vcc5v0>;
> +      };
> +    };
Bindings have indented in multiples of 4 spaces I believe.  That needs tidying
up in this example.

Thanks,

Jonathan

> +
> +...
> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> index 6046f4555852..5afca0586c41 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> @@ -261,6 +261,8 @@ patternProperties:
>      description: Dragino Technology Co., Limited
>    "^dserve,.*":
>      description: dServe Technology B.V.
> +  "^dynament,.*":
> +    description: Dynament, Ltd.
>    "^ea,.*":
>      description: Embedded Artists AB
>    "^ebs-systart,.*":
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 18c26558ddfe..84592789e01b 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -13137,6 +13137,7 @@ DYNAMENT PREMIER SERIES SINGLE GAS SENSOR DRIVER
>  M:	ruantu <mtwget@...il.com>
>  S:	Maintained
>  F:	drivers/iio/chemical/premier.c
> +F:	Documentation/devicetree/bindings/iio/chemical/dynament,premier.yaml
>  
>  PLANTOWER PMS7003 AIR POLLUTION SENSOR DRIVER
>  M:	Tomasz Duszynski <tduszyns@...il.com>