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Message-ID: <CAD=FV=WvagXMojeQJW-uzy59Q0m0oQpjopNwPkupDq4gGJoQgw@mail.gmail.com>
Date:   Thu, 22 Sep 2022 09:34:44 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Yunlong Jia <ecs.beijing2022@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Yunlong Jia <yunlong.jia@....com.tw>,
        Henry Sun <henrysun@...gle.com>,
        Bob Moragues <moragues@...omium.org>,
        David Heidelberg <david@...t.cz>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "open list:HID CORE LAYER" <linux-input@...r.kernel.org>
Subject: Re: [PATCH v4 3/4] dt-bindings: input: touchscreen: elants_i2c: Add
 eth3915n touchscreen chip

Hi,

On Thu, Sep 22, 2022 at 3:23 AM Yunlong Jia <ecs.beijing2022@...il.com> wrote:
>
> Add an elan touch screen chip eth3915n.
>
> Signed-off-by: Yunlong Jia <ecs.beijing2022@...il.com>
> Reviewed-by: Douglas Anderson <dianders@...omium.org>

You should have left my Reviewed-by off in this case. I haven't
actually seen this patch. You could have possibly added "Suggested-by"
or just left me off entirely until I gave you the tag.


> ---
>
> (no changes since v1)

I probably would have added this in patman:

Series-changes: 4
-  eth3915n dt bindings added in v4.

Without that you get the "(no changes from v1)" which is always weird
since this patch is new for v4.


>  .../devicetree/bindings/input/touchscreen/elan,elants_i2c.yaml   | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/elan,elants_i2c.yaml b/Documentation/devicetree/bindings/input/touchscreen/elan,elants_i2c.yaml
> index a9b53c2e6f0ab..d28625372f5ac 100644
> --- a/Documentation/devicetree/bindings/input/touchscreen/elan,elants_i2c.yaml
> +++ b/Documentation/devicetree/bindings/input/touchscreen/elan,elants_i2c.yaml
> @@ -17,6 +17,7 @@ properties:
>      enum:
>        - elan,ektf3624
>        - elan,ekth3500
> +      - elan,ekth3915

This is not quite right because for elan,ekth3915 you're expecting
device trees to have:

compatible = "elan,ekth3915", "elan,ekth3500"

In other words it's actually a 3915 but the 3500 driver should work
fine. I believe a reasonable syntax is:

  compatible:
    oneOf:
      - enum:
          - elan,ektf3624
          - elan,ekth3500
      - items:
          - const: elan,ekth3915
          - const: elan,ekth3500

-Doug

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