linux-kernel - Re: [PATCH v3 5/6] dt-bindings: leds: max77650: convert the binding document to yaml

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Date:   Thu, 17 Oct 2019 13:51:17 -0500
From:   Rob Herring <robh@...nel.org>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Mark Rutland <mark.rutland@....com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Pavel Machek <pavel@....cz>, Dan Murphy <dmurphy@...com>,
        Lee Jones <lee.jones@...aro.org>,
        Sebastian Reichel <sre@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, linux-input@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-leds@...r.kernel.org, linux-pm@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH v3 5/6] dt-bindings: leds: max77650: convert the binding
 document to yaml

On Thu, Oct 17, 2019 at 09:12:33AM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@...libre.com>
> 
> Convert the binding document for MAX77650 LED module to YAML.
> 
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
> ---
>  .../bindings/leds/leds-max77650.txt           | 57 ------------------
>  .../bindings/leds/leds-max77650.yaml          | 58 +++++++++++++++++++
>  2 files changed, 58 insertions(+), 57 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/leds/leds-max77650.txt
>  create mode 100644 Documentation/devicetree/bindings/leds/leds-max77650.yaml
> 
> diff --git a/Documentation/devicetree/bindings/leds/leds-max77650.txt b/Documentation/devicetree/bindings/leds/leds-max77650.txt
> deleted file mode 100644
> index 3a67115cc1da..000000000000
> --- a/Documentation/devicetree/bindings/leds/leds-max77650.txt
> +++ /dev/null
> @@ -1,57 +0,0 @@
> -LED driver for MAX77650 PMIC from Maxim Integrated.
> -
> -This module is part of the MAX77650 MFD device. For more details
> -see Documentation/devicetree/bindings/mfd/max77650.txt.
> -
> -The LED controller is represented as a sub-node of the PMIC node on
> -the device tree.
> -
> -This device has three current sinks.
> -
> -Required properties:
> ---------------------
> -- compatible:		Must be "maxim,max77650-led"
> -- #address-cells:	Must be <1>.
> -- #size-cells:		Must be <0>.
> -
> -Each LED is represented as a sub-node of the LED-controller node. Up to
> -three sub-nodes can be defined.
> -
> -Required properties of the sub-node:
> -------------------------------------
> -
> -- reg:			Must be <0>, <1> or <2>.
> -
> -Optional properties of the sub-node:
> -------------------------------------
> -
> -- label:		See Documentation/devicetree/bindings/leds/common.txt
> -- linux,default-trigger: See Documentation/devicetree/bindings/leds/common.txt
> -
> -For more details, please refer to the generic GPIO DT binding document
> -<devicetree/bindings/gpio/gpio.txt>.
> -
> -Example:
> ---------
> -
> -	leds {
> -		compatible = "maxim,max77650-led";
> -		#address-cells = <1>;
> -		#size-cells = <0>;
> -
> -		led@0 {
> -			reg = <0>;
> -			label = "blue:usr0";
> -		};
> -
> -		led@1 {
> -			reg = <1>;
> -			label = "red:usr1";
> -			linux,default-trigger = "heartbeat";
> -		};
> -
> -		led@2 {
> -			reg = <2>;
> -			label = "green:usr2";
> -		};
> -	};
> diff --git a/Documentation/devicetree/bindings/leds/leds-max77650.yaml b/Documentation/devicetree/bindings/leds/leds-max77650.yaml
> new file mode 100644
> index 000000000000..5a1e256185bd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/leds-max77650.yaml
> @@ -0,0 +1,58 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/leds/leds-max77650.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: LED driver for MAX77650 PMIC from Maxim Integrated.
> +
> +maintainers:
> +  - Bartosz Golaszewski <bgolaszewski@...libre.com>
> +
> +description: |
> +  This module is part of the MAX77650 MFD device. For more details
> +  see Documentation/devicetree/bindings/mfd/max77650.txt.
> +
> +  The LED controller is represented as a sub-node of the PMIC node on
> +  the device tree.
> +
> +  This device has three current sinks.
> +
> +properties:
> +  compatible:
> +    const: maxim,max77650-led
> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 0
> +
> +patternProperties:
> +  "^led@[0-2]$":
> +    type: object
> +    description: |
> +      Properties for a single LED.
> +
> +    properties:
> +      reg:
> +        description:
> +          Index of the LED.
> +        maxItems: 1
> +        minimum: 0
> +        maximum: 2

Mixing array and scalar constraints. Just need (dropping maxItems):

items:
  - minimum: 0
    maximum: 2

> +
> +      label:
> +        $ref: "/schemas/types.yaml#/definitions/string"

Globally defined as a string already.

> +        description:
> +          The label of this LED.
> +
> +      linux,default-trigger:
> +        $ref: "/schemas/types.yaml#/definitions/string"

Assume this gets a common binding.

So just 'true' is sufficient for both of these.

> +        description:
> +          String defining the default trigger assigned to this LED.
> +
> +required:
> +  - compatible
> +  - "#address-cells"
> +  - "#size-cells"
> -- 
> 2.23.0
>