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Date:   Wed, 3 Feb 2021 09:29:40 +0100
From:   Enric Balletbo Serra <eballetbo@...il.com>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-iio <linux-iio@...r.kernel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Gwendal Grignou <gwendal@...omium.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>
Subject: Re: [PATCH v4 2/3] dt-bindings: iio: Add cros ec proximity yaml doc

Hi Stephen,

Missatge de Stephen Boyd <swboyd@...omium.org> del dia dt., 2 de febr.
2021 a les 19:53:
>
> Some cros ECs support a front proximity MKBP event via
> 'EC_MKBP_FRONT_PROXIMITY'. Add a DT binding to document this feature via
> a node that is a child of the main cros_ec device node. Devices that
> have this ability will describe this in firmware.
>
> Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
> Cc: Benson Leung <bleung@...omium.org>
> Cc: Guenter Roeck <groeck@...omium.org>
> Cc: Douglas Anderson <dianders@...omium.org>
> Cc: Gwendal Grignou <gwendal@...omium.org>
> Cc: <devicetree@...r.kernel.org>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>

Thanks for adding a full example, IIRC this is preferred by Rob and we
are also trying to apply this rule on all the cros-ec related
bindings, so the dt_bindings_check really checks a full example. From
my side looks good to me.

Reviewed-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>

> ---
>  .../google,cros-ec-mkbp-proximity.yaml        | 46 +++++++++++++++++++
>  .../bindings/mfd/google,cros-ec.yaml          |  3 ++
>  2 files changed, 49 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/proximity/google,cros-ec-mkbp-proximity.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/proximity/google,cros-ec-mkbp-proximity.yaml b/Documentation/devicetree/bindings/iio/proximity/google,cros-ec-mkbp-proximity.yaml
> new file mode 100644
> index 000000000000..d82b929af445
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/proximity/google,cros-ec-mkbp-proximity.yaml
> @@ -0,0 +1,46 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +
> +$id: http://devicetree.org/schemas/iio/proximity/google,cros-ec-mkbp-proximity.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ChromeOS EC MKBP Proximity Sensor
> +
> +maintainers:
> +  - Stephen Boyd <swboyd@...omium.org>
> +  - Benson Leung <bleung@...omium.org>
> +  - Enric Balletbo i Serra <enric.balletbo@...labora.com>
> +
> +description: |
> +  Google's ChromeOS EC sometimes has the ability to detect user proximity.
> +  This is implemented on the EC as near/far logic and exposed to the OS
> +  via an MKBP switch bit.
> +
> +properties:
> +  compatible:
> +    const: google,cros-ec-mkbp-proximity
> +
> +  label:
> +    description: Name for proximity sensor
> +
> +required:
> +  - compatible
> +
> +unevaluatedProperties: false
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    spi {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      ec@0 {
> +        compatible = "google,cros-ec-spi";
> +        reg = <0>;
> +        proximity {
> +          compatible = "google,cros-ec-mkbp-proximity";
> +          label = "proximity-wifi-lte";
> +        };
> +      };
> +    };
> diff --git a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> index 76bf16ee27ec..479a9f15de32 100644
> --- a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> +++ b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> @@ -94,6 +94,9 @@ properties:
>    keyboard-controller:
>      $ref: "/schemas/input/google,cros-ec-keyb.yaml#"
>
> +  proximity:
> +    $ref: "/schemas/iio/proximity/google,cros-ec-mkbp-proximity.yaml#"
> +
>    codecs:
>      type: object
>      additionalProperties: false
> --
> https://chromeos.dev
>

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