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

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Message-ID: <CAL_JsqJ0mqqK69m_iFKTqGzu_TYvR7WdsuKw-ead74Sc=6msDw@mail.gmail.com>
Date:   Fri, 16 Apr 2021 08:30:01 -0500
From:   Rob Herring <robh+dt@...nel.org>
To:     Enric Balletbo Serra <eballetbo@...il.com>
Cc:     Ikjoon Jang <ikjn@...omium.org>,
        Linux Input <linux-input@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Dmitry Torokhov <dtor@...omium.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>,
        Lee Jones <lee.jones@...aro.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 1/2] mfd: google,cros-ec: add DT bindings for a
 baseboard's switch device

On Fri, Apr 16, 2021 at 12:37 AM Enric Balletbo Serra
<eballetbo@...il.com> wrote:
>
> Hi Ikjoon,
>
> Thank you for your patch.
>
> Missatge de Ikjoon Jang <ikjn@...omium.org> 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@...omium.org>
> >
> > ---
> >
> > 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?

Yes.

>
> > +                compatible = "google,cros-cbas";
> > +            };
> >          };
> >      };
> >
> > --
> > 2.31.1.295.g9ea45b61b8-goog
> >
>
> Acked-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>