Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:3 as permitted sender) client-ip=2620:137:e000::3:3;
MIME-Version: 1.0
References: <20230727171750.633410-1-dianders@chromium.org> <20230727101636.v4.11.Ia06c340e3482563e6bfd3106ecd0d3139f173ca4@changeid>
In-Reply-To: <20230727101636.v4.11.Ia06c340e3482563e6bfd3106ecd0d3139f173ca4@changeid>
From:   Doug Anderson <dianders@chromium.org>
Date:   Thu, 14 Sep 2023 16:42:47 -0700
Message-ID: <CAD=FV=Ued9suf95ub1-rftO2Ffx_Rwv7XvAf7yX-s7djO889+Q@mail.gmail.com>
Subject: Re: [PATCH v4 11/11] arm64: dts: qcom: sc7180: Link trogdor
 touchscreens to the panels
To:     Jiri Kosina <jikos@kernel.org>,
        Benjamin Tissoires <benjamin.tissoires@redhat.com>,
        Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Frank Rowand <frowand.list@gmail.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Neil Armstrong <neil.armstrong@linaro.org>,
        Sam Ravnborg <sam@ravnborg.org>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Maxime Ripard <mripard@kernel.org>,
        Thomas Zimmermann <tzimmermann@suse.de>
Cc:     linux-arm-msm@vger.kernel.org,
        yangcong5@huaqin.corp-partner.google.com,
        devicetree@vger.kernel.org, Daniel Vetter <daniel@ffwll.ch>,
        hsinyi@google.com, Chris Morgan <macroalpha82@gmail.com>,
        linux-input@vger.kernel.org, cros-qcom-dts-watchers@chromium.org,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Precedence: bulk

Hi,

On Thu, Jul 27, 2023 at 10:19=E2=80=AFAM Douglas Anderson <dianders@chromiu=
m.org> wrote:
>
> Let's provide the proper link from the touchscreen to the panel on
> trogdor devices where the touchscreen support it. This allows the OS
> to power sequence the touchscreen more properly.
>
> For the most part, this is just expected to marginally improve power
> consumption while the screen is off. However, in at least one trogdor
> model (wormdingler) it's suspected that this will fix some behavorial
> corner cases when the panel power cycles (like for a modeset) without
> the touchscreen power cycling.
>
> NOTE: some trogdor variants use touchscreens that don't (yet) support
> linking the touchscreen and the panel. Those variants are left alone.
>
> Reviewed-by: Maxime Ripard <mripard@kernel.org>
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
> ---
>
> (no changes since v1)
>
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi        | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi      | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi         | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi        | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi | 1 +
>  arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi   | 1 +
>  6 files changed, 6 insertions(+)

FWIW, this old patch could land any time. All the earlier patches in
the series have landed.

-Doug