linux-kernel - Re: [PATCH] arm64: dts: qcom: sc7180-trogdor: Remove cros-ec keyboard from detachables

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Date:   Fri, 6 May 2022 10:30:56 -0400
From:   Stephen Boyd <swboyd@...omium.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Andy Gross <agross@...nel.org>, linux-kernel@...r.kernel.org,
        patches@...ts.linux.dev, linux-arm-msm@...r.kernel.org,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        "Joseph S. Barrera III" <joebar@...omium.org>
Subject: Re: [PATCH] arm64: dts: qcom: sc7180-trogdor: Remove cros-ec keyboard
 from detachables

Quoting Bjorn Andersson (2022-05-05 20:40:22)
> On Tue 26 Apr 17:57 CDT 2022, Stephen Boyd wrote:
>
> > Trogdor devices that have a detachable keyboard still have a
> > non-detachable keyboard input device present because we include the
> > cros-ec-keyboard.dtsi snippet in the top-level sc7180-trogdor.dtsi file
> > that every variant board includes. We do this because the
> > keyboard-controller node also provides some buttons like the power
> > button and volume buttons. Unfortunately, this means we register a
> > keyboard input device that doesn't do anything on boards with a
> > detachable keyboard. Let's delete the rows/columns properties of the
> > device node to indicate that there isn't a matrix keyboard on these
> > boards.
> >
>
> As this seems to directly relate to the final design of each device,
> would it make sense to push out the &keyboard_controller from
> trogdor.dtsi? Or do you think it would be too much duplication for it to
> be worth it?

I tried it out a few days ago but I'm waiting to see how the driver
patch goes before sending the dts bits. See the WIP patches up to the
end of the chain on chromium gerrit[1].

[1] https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/3609017