Re: [PATCH v5 1/2] mfd: google,cros-ec: add DT bindings for a baseboard's switch device

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Hi Ikjoon,

Thank you for your patch.

Missatge de Ikjoon Jang <ikjn@xxxxxxxxxxxx> del dia dj., 15 d’abr.
2021 a les 5:32:
>
> This is for ChromeOS tablets which have a 'cros_cbas' switch device
> in the "Whiskers" base board. This device can be instantiated only by
> device tree on ARM platforms. ChromeOS EC doesn't provide a way to
> probe the device.
>
> Signed-off-by: Ikjoon Jang <ikjn@xxxxxxxxxxxx>
>
> ---
>
> Changes in v5:
>  - Add missing blank lines and change the description property's position.
>  - Add a note to description: "this device cannot be detected at runtime."
>
> Changes in v4:
> Define cros-cbase bindings inside google,cros-ec.yaml instead of
> a separated binding document.
>
>  .../bindings/mfd/google,cros-ec.yaml          | 20 +++++++++++++++++++
>  1 file changed, 20 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> index 76bf16ee27ec..8dcce176b72e 100644
> --- a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> +++ b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> @@ -114,6 +114,22 @@ properties:
>        - "#address-cells"
>        - "#size-cells"
>
> +  cbas:
> +    type: object
> +
> +    description:
> +      This device is used to signal when a detachable base is attached
> +      to a Chrome OS tablet. This device cannot be detected at runtime.
> +
> +    properties:
> +      compatible:
> +        const: google,cros-cbas
> +
> +    required:
> +      - compatible
> +
> +    additionalProperties: false
> +
>  patternProperties:
>    "^i2c-tunnel[0-9]*$":
>      type: object
> @@ -180,6 +196,10 @@ examples:
>              interrupts = <99 0>;
>              interrupt-parent = <&gpio7>;
>              spi-max-frequency = <5000000>;
> +
> +            base_detection: cbas {

nit: Rob, shouldn't this be just cbas?

> +                compatible = "google,cros-cbas";
> +            };
>          };
>      };
>
> --
> 2.31.1.295.g9ea45b61b8-goog
>

Acked-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>




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