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Date:   Tue, 10 Apr 2018 20:28:13 +0200 (CEST)
From:   Stefan Wahren <stefan.wahren@i2se.com>
To:     Rob Herring <robh+dt@kernel.org>, Eric Anholt <eric@anholt.net>,
        bcm-kernel-feedback-list@broadcom.com, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, Ray Jui <rjui@broadcom.com>,
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        Florian Fainelli <f.fainelli@gmail.com>,
        linux-rpi-kernel@lists.infradead.org,
        Mark Rutland <mark.rutland@arm.com>,
        Jon Mason <jonmason@broadcom.com>,
        dri-devel@lists.freedesktop.org,
        linux-arm-kernel@lists.infradead.org
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In-Reply-To: <20180409230040.1100-1-eric@anholt.net>
References: <20180409230040.1100-1-eric@anholt.net>
Subject: Re: [PATCH 1/3] drm/vc4: Remove the need for the GPU-subsystem DT
 node.
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Hi Eric,

> Eric Anholt <eric@anholt.net> hat am 10. April 2018 um 01:00 geschrieben:
> 
> 
> The GPU subsystem node was a workaround to have a central device to
> bind V3D and display to.  Following the lead of 246774d17fc0
> ("drm/etnaviv: remove the need for a gpu-subsystem DT node"), remove
> the subsystem node usage and just create a platform device for the DRM
> device to attach to if any of the subsystem devices are present.

i didn't test it. Does the code change keep the backward compatibility with older DT?