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References: <20240531-edp-panel-drop-v3-0-4c98b2b95e3a@linaro.org>
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From: Doug Anderson <dianders@chromium.org>
Date: Thu, 30 May 2024 16:16:35 -0700
Message-ID: <CAD=FV=XMgAnaEaHXZJL57+66OXs0afP9vurxf_ffqkum=xqEfA@mail.gmail.com>
Subject: Re: [PATCH v3 0/3] drm/panel-edp: remove several legacy compatibles
 used by the driver
To: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>, Jessica Zhang <quic_jesszhan@quicinc.com>, 
	Sam Ravnborg <sam@ravnborg.org>, Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, 
	Maxime Ripard <mripard@kernel.org>, Thomas Zimmermann <tzimmermann@suse.de>, 
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>, dri-devel@lists.freedesktop.org, 
	linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, 
	linux-rockchip@lists.infradead.org, Jeffrey Hugo <quic_jhugo@quicinc.com>
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Hi,

On Thu, May 30, 2024 at 4:13=E2=80=AFPM Dmitry Baryshkov
<dmitry.baryshkov@linaro.org> wrote:
>
> There are two ways to describe an eDP panel in device tree. The
> recommended way is to add a device on the AUX bus, ideally using the
> edp-panel compatible. The legacy way is to define a top-level platform
> device for the panel.
>
> Document that adding support for eDP panels in a legacy way is strongly
> discouraged (if not forbidden at all).
>
> While we are at it, also drop legacy compatible strings and bindings for
> five panels. These compatible strings were never used by a DT file
> present in Linux kernel and most likely were never used with the
> upstream Linux kernel.
>
> The following compatibles were never used by the devices supported by
> the upstream kernel and are a subject to possible removal:
>
> - lg,lp097qx1-spa1
> - samsung,lsn122dl01-c01
> - sharp,ld-d5116z01b
>
> I'm considering dropping them later, unless there is a good reason not
> to do so.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---
> Changes in v3:
> - Rephrased the warning comment, following some of Doug's suggestions.
> - Link to v2: https://lore.kernel.org/r/20240529-edp-panel-drop-v2-0-fcfc=
457fc8dd@linaro.org
>
> Changes in v2:
> - Actually drop support for five panels acked by Doug Andersson
> - Link to v1: https://lore.kernel.org/r/20240523-edp-panel-drop-v1-1-045d=
62511d09@linaro.org
>
> ---
> Dmitry Baryshkov (3):
>       drm/panel-edp: add fat warning against adding new panel compatibles
>       dt-bindings: display: panel-simple: drop several eDP panels
>       drm/panel-edp: drop several legacy panels
>
>  .../bindings/display/panel/panel-simple.yaml       |  10 --
>  drivers/gpu/drm/panel/panel-edp.c                  | 192 +++------------=
------
>  2 files changed, 25 insertions(+), 177 deletions(-)

Thanks! I'm happy to apply this series or also happy if some other
drm-misc committer member wants to apply it. Probably we should wait
for a DT person to make sure that they don't have any problems with
the bindings change.


-Doug