linux-kernel - Re: [PATCH] drm/cirrus: flip default to 32bpp

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Message-ID: <e127596f255261d78fdfe6f534a1000f60c3c605.camel@redhat.com>
Date:   Fri, 06 Jul 2018 14:35:07 -0400
From:   Adam Jackson <ajax@...hat.com>
To:     Gerd Hoffmann <kraxel@...hat.com>, dri-devel@...ts.freedesktop.org
Cc:     David Airlie <airlied@...ux.ie>, Dave Airlie <airlied@...hat.com>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:DRM DRIVER FOR QEMU'S CIRRUS DEVICE" 
        <virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH] drm/cirrus: flip default to 32bpp

On Fri, 2018-07-06 at 11:12 +0200, Gerd Hoffmann wrote:
> cirrus can handle 1024x768 (and slightly higher) with 24bpp depth.
> cirrus can handle up to 800x600 with 32bpp.

16bpp is maybe a better choice? Nobody's using cirrus because they care
about color fidelity and it'll use less CPU to update. There's
precedent here, mgag200 defaults to 16bpp on sufficiently memory-
impaired devices.

- ajax