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Message-ID: <CAD=FV=Ued9suf95ub1-rftO2Ffx_Rwv7XvAf7yX-s7djO889+Q@mail.gmail.com>
Date: Thu, 14 Sep 2023 16:42:47 -0700
From: Doug Anderson <dianders@...omium.org>
To: Jiri Kosina <jikos@...nel.org>,
Benjamin Tissoires <benjamin.tissoires@...hat.com>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Frank Rowand <frowand.list@...il.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Neil Armstrong <neil.armstrong@...aro.org>,
Sam Ravnborg <sam@...nborg.org>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>
Cc: linux-arm-msm@...r.kernel.org,
yangcong5@...qin.corp-partner.google.com,
devicetree@...r.kernel.org, Daniel Vetter <daniel@...ll.ch>,
hsinyi@...gle.com, Chris Morgan <macroalpha82@...il.com>,
linux-input@...r.kernel.org, cros-qcom-dts-watchers@...omium.org,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v4 11/11] arm64: dts: qcom: sc7180: Link trogdor
touchscreens to the panels
Hi,
On Thu, Jul 27, 2023 at 10:19 AM Douglas Anderson <dianders@...omium.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@...nel.org>
> Signed-off-by: Douglas Anderson <dianders@...omium.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
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