linux-kernel - Re: [PATCH v2] arm64: dts: qcom: sc7180-trogdor: Split out keyboard node and describe detachables

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Date:   Mon, 27 Jun 2022 16:35:24 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>, patches@...ts.linux.dev,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        "Joseph S. Barrera III" <joebar@...omium.org>
Subject: Re: [PATCH v2] arm64: dts: qcom: sc7180-trogdor: Split out keyboard
 node and describe detachables

Hi,

On Mon, Jun 27, 2022 at 2:28 PM Stephen Boyd <swboyd@...omium.org> 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.
>
> Change the node's compatible on detachables to the newly introduced
> "google,cros-ec-keyb-switches" compatible to indicate that there are
> only switches and no keyboard to register. Similarly, move the keyboard
> include that defines the keyboard-controller node out of
> sc7180-trogdor.dtsi to boards that actually have a keyboard so that the
> matrix properties are not defined on boards with the switches
> compatible. Future boards can either use the include approach or the
> node definition approach to describe a keyboard with possible switches
> or just some switches.
>
> Cc: Benson Leung <bleung@...omium.org>
> Cc: Guenter Roeck <groeck@...omium.org>
> Cc: Douglas Anderson <dianders@...omium.org>
> Cc: Hsin-Yi Wang <hsinyi@...omium.org>
> Cc: "Joseph S. Barrera III" <joebar@...omium.org>
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>
> ---
>
> Changes from v1 (https://lore.kernel.org/r/20220518172525.3319993-1-swboyd@chromium.org):
>  * Rebased onto Joe's series applied on top of qcom's arm64-fixes-for-4.19
>  * Updated more dtsi files
>
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi        | 4 ++++
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi      | 6 ++++++
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-kingoftown.dtsi    | 2 +-
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi         | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-mrbland.dtsi       | 6 ++++++
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-pazquel.dtsi       | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi        | 2 ++
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi | 6 ++++++
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-r1.dts             | 2 ++
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi   | 4 ++++
>  arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi               | 1 -
>  11 files changed, 33 insertions(+), 2 deletions(-)

Reviewed-by: Douglas Anderson <dianders@...omium.org>