linux-kernel - Re: [PATCH] drm/komeda: Adds output-color format/depth support

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Message-ID: <20190925094810.fbeyt7fxvyhaip33@DESKTOP-E1NTVVP.localdomain>
Date:   Wed, 25 Sep 2019 09:48:11 +0000
From:   Brian Starkey <Brian.Starkey@....com>
To:     "james qian wang (Arm Technology China)" <james.qian.wang@....com>
CC:     "Lowry Li (Arm Technology China)" <Lowry.Li@....com>,
        Liviu Dudau <Liviu.Dudau@....com>,
        "maarten.lankhorst@...ux.intel.com" 
        <maarten.lankhorst@...ux.intel.com>,
        "seanpaul@...omium.org" <seanpaul@...omium.org>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        Mihail Atanassov <Mihail.Atanassov@....com>,
        "Julien Yin (Arm Technology China)" <Julien.Yin@....com>,
        "Jonathan Chai (Arm Technology China)" <Jonathan.Chai@....com>,
        Ayan Halder <Ayan.Halder@....com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        nd <nd@....com>
Subject: Re: [PATCH] drm/komeda: Adds output-color format/depth support

Hi James,

On Tue, Sep 24, 2019 at 02:13:27AM +0000, james qian wang (Arm Technology China) wrote:
> 
> Hi Brian:
> 
> Since one monitor can support mutiple color-formats, this DT property
> supply a way for user to select a specific one from this supported
> color-formats.

Modifying DT is a _really_ user-unfriendly way of specifying
preferences. If we want a user to be able to pick a preferred format,
then it should probably be via the atomic API as Ville mentioned.

Cheers,
-Brian