From: Maxime Ripard <maxime.ripard@bootlin.com>
To: Eric Anholt <eric@anholt.net>
Cc: eben@raspberrypi.org,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
dri-devel@lists.freedesktop.org,
Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
Sean Paul <seanpaul@chromium.org>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] drm/vc4: Use 16bpp by default for the fbdev buffer
Date: Thu, 7 Mar 2019 13:14:11 +0100 [thread overview]
Message-ID: <20190307121411.jzbyri2of2x2uau7@flea> (raw)
In-Reply-To: <20190306140245.21973-1-maxime.ripard@bootlin.com>
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On Wed, Mar 06, 2019 at 03:02:45PM +0100, Maxime Ripard wrote:
> The preferred bpp for the fbdev emulation buffer has been 32 so far, which
> means that by default we will allocate an 8MB buffer with a 1920x1080
> resolution.
>
> Worse this memory will be allocated from the CMA pool, and will never be
> freed even if we don't use the fbdev emulation. Therefore, reducing it is a
> big deal, and switching to 16bpp by default will gain us around 4MB at
> 1920x1080, while keeping decent color depth. And users still have the
> option to switch to 32bpp using the kernel command line.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Applied with Eric and Paul Reviewed-by
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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prev parent reply other threads:[~2019-03-07 12:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-06 14:02 [PATCH] drm/vc4: Use 16bpp by default for the fbdev buffer Maxime Ripard
2019-03-06 15:06 ` Paul Kocialkowski
2019-03-06 17:32 ` Eric Anholt
2019-03-07 12:14 ` Maxime Ripard [this message]
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