Re: [PATCH v3 1/2] dt-bindings: input: Add DT bindings for Whiskers switch

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On Wed, Oct 23, 2019 at 10:43:48AM +0800, Ikjoon Jang wrote:
> Add the DT binding document for Hammer's TABLET_MODE switch.

This doesn't have any properties. Why does it need to be in DT? Just 
have the EC driver instantiate it.

> 
> Signed-off-by: Ikjoon Jang <ikjn@xxxxxxxxxxxx>
> ---
>  .../devicetree/bindings/input/cros-cbas.yaml  | 22 +++++++++++++++++++
>  1 file changed, 22 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/cros-cbas.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/cros-cbas.yaml b/Documentation/devicetree/bindings/input/cros-cbas.yaml
> new file mode 100644
> index 000000000000..3bc989c6a295
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/cros-cbas.yaml
> @@ -0,0 +1,22 @@
> +# SPDX-License-Identifier: GPL-2.0

(GPL-2.0-only OR BSD-2-Clause) for new bindings please.

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/cros-cbas.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ChromeOS Hammer's Base Attached Switch
> +
> +maintainers:
> +  - Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> +
> +description:
> +  This device is used to signal when a detachable base is attached to a
> +  Chrome OS tablet. The node for this device must be under a cros-ec node
> +  like google,cros-ec-spi or google,cros-ec-i2c.

This should probably just be part of an EC schema where it can be 
enforced that this is a child node. It could be either embedded into it 
or referenced. I'd lean toward the former given this is only a 
compatible string...

> +
> +properties:
> +  compatible:
> +    const: google,cros-cbas
> +
> +required:
> +  - compatible

Add here:

additionalProperties: false.

> -- 
> 2.23.0.866.gb869b98d4c-goog
> 



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