linux-kernel - Re: [PATCH v3 0/3] drm/panel-edp: remove several legacy compatibles used by the driver

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Date: Fri, 31 May 2024 11:46:00 -0600
From: Jeffrey Hugo <quic_jhugo@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC: Douglas Anderson <dianders@...omium.org>,
        Neil Armstrong
	<neil.armstrong@...aro.org>,
        Jessica Zhang <quic_jesszhan@...cinc.com>,
        "Sam
 Ravnborg" <sam@...nborg.org>,
        Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-rockchip@...ts.infradead.org>
Subject: Re: [PATCH v3 0/3] drm/panel-edp: remove several legacy compatibles
 used by the driver

On 5/31/2024 11:43 AM, Dmitry Baryshkov wrote:
> On Fri, May 31, 2024 at 10:18:07AM -0600, Jeffrey Hugo wrote:
>> On 5/30/2024 5:12 PM, Dmitry Baryshkov 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
>>
>> Ok to drop the sharp one I added.  It should be able to be handled by the
>> (newish) edp-panel, but I think the TI bridge driver needs some work for the
>> specific platform (no I2C connection) to verify.
> 
> Thanks. I'm tempted to merge the series as is now and drop
> sharp,ld-d5116z01b once you can confirm that it can be handled by
> edp-panel on your platform.
> 

Sounds good to me.

-Jeff