linux-kernel - Re: [PATCH v2 5/5] drm/ingenic: Add option to alloc cached GEM buffers

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Date:   Thu, 11 Mar 2021 12:30:40 +0000
From:   Christoph Hellwig <hch@...radead.org>
To:     Paul Cercueil <paul@...pouillou.net>
Cc:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>, od@...c.me,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org
Subject: Re: [PATCH v2 5/5] drm/ingenic: Add option to alloc cached GEM
 buffers

On Sun, Mar 07, 2021 at 08:28:35PM +0000, Paul Cercueil wrote:
> With the module parameter ingenic-drm.cached_gem_buffers, it is possible
> to specify that we want GEM buffers backed by non-coherent memory.

Shouldn't there be a way to discover this through a DT property?