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Date:   Mon, 3 Feb 2020 12:18:49 +0000
From:   Rob Herring <robh@kernel.org>
To:     Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Cc:     devicetree@vger.kernel.org, myungjoo.ham@samsung.com,
        cw00.choi@samsung.com, mark.rutland@arm.com, bleung@chromium.org,
        enric.balletbo@collabora.com, groeck@chromium.org,
        linux-kernel@vger.kernel.org, helen.koike@collabora.com,
        ezequiel@collabora.com, kernel@collabora.com, dafna3@gmail.com
Subject: Re: [PATCH] dt-bindings: convert extcon-usbc-cros-ec.txt
 extcon-usbc-cros-ec.yaml
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References: <20200122151313.11782-1-dafna.hirschfeld@collabora.com>
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On Wed, Jan 22, 2020 at 04:13:13PM +0100, Dafna Hirschfeld wrote:
> convert the binding file extcon-usbc-cros-ec.txt to yaml format
> This was tested and verified on ARM with:
> make dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml
> make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml
> 
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
> ---
>  .../bindings/extcon/extcon-usbc-cros-ec.txt   | 24 -----------
>  .../bindings/extcon/extcon-usbc-cros-ec.yaml  | 42 +++++++++++++++++++
>  2 files changed, 42 insertions(+), 24 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.txt
>  create mode 100644 Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml
> 
> diff --git a/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.txt b/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.txt
> deleted file mode 100644
> index 8e8625c00dfa..000000000000
> --- a/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.txt
> +++ /dev/null
> @@ -1,24 +0,0 @@
> -ChromeOS EC USB Type-C cable and accessories detection
> -
> -On ChromeOS systems with USB Type C ports, the ChromeOS Embedded Controller is
> -able to detect the state of external accessories such as display adapters
> -or USB devices when said accessories are attached or detached.
> -
> -The node for this device must be under a cros-ec node like google,cros-ec-spi
> -or google,cros-ec-i2c.
> -
> -Required properties:
> -- compatible:		Should be "google,extcon-usbc-cros-ec".
> -- google,usb-port-id:	Specifies the USB port ID to use.
> -
> -Example:
> -	cros-ec@0 {
> -		compatible = "google,cros-ec-i2c";
> -
> -		...
> -
> -		extcon {
> -			compatible = "google,extcon-usbc-cros-ec";
> -			google,usb-port-id = <0>;
> -		};
> -	}
> diff --git a/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml b/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml
> new file mode 100644
> index 000000000000..78779831282a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml
> @@ -0,0 +1,42 @@
> +# SPDX-License-Identifier: GPL-2.0

Surely Google is the only copyright holder on the old file and would be 
okay with dual licensing here?

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/extcon/extcon-usbc-cros-ec.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ChromeOS EC USB Type-C cable and accessories detection
> +
> +maintainers:
> +  - MyungJoo Ham <myungjoo.ham@samsung.com>
> +  - Chanwoo Choi <cw00.choi@samsung.com>

Usually this is someone that knows the h/w, not who applies the patch. 
I'd expect a Google person.

> +
> +description: |
> +  On ChromeOS systems with USB Type C ports, the ChromeOS Embedded Controller is
> +  able to detect the state of external accessories such as display adapters
> +  or USB devices when said accessories are attached or detached.
> +  The node for this device must be under a cros-ec node like google,cros-ec-spi
> +  or google,cros-ec-i2c.
> +
> +properties:
> +  compatible:
> +    const: google,extcon-usbc-cros-ec
> +
> +  google,usb-port-id:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      the port id

Any range of values allowed? ~0 is okay?

> +required:
> +  - compatible
> +  - google,usb-port-id
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    cros-ec@0 {
> +        compatible = "google,cros-ec-i2c";
> +        extcon {
> +            compatible = "google,extcon-usbc-cros-ec";
> +            google,usb-port-id = <0>;
> +        };
> +    };
> -- 
> 2.17.1
>