From: arnd@arndb•de (Arnd Bergmann)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH V2] video: implement a simple framebuffer driver
Date: Tue, 30 Apr 2013 17:07:57 +0200 [thread overview]
Message-ID: <201304301707.57197.arnd@arndb.de> (raw)
In-Reply-To: <1367332685.945287573@f287.mail.ru>
On Tuesday 30 April 2013, Alexander Shiyan wrote:
> > On 04/04/2013 05:39 AM, Stephen Warren wrote:
> > > A simple frame-buffer describes a raw memory region that may be rendered
> > > to, with the assumption that the display hardware has already been set
> > > up to scan out from that buffer.
> > >
> > > This is useful in cases where a bootloader exists and has set up the
> > > display hardware, but a Linux driver doesn't yet exist for the display
> > > hardware.
> > >
> > > Signed-off-by: Stephen Warren <swarren@wwwdotorg•org>
> ...
> > > + framebuffer {
> > > + compatible = "simple-framebuffer";
> > > + reg = <0x1d385000 (1600 * 1200 * 2)>;
> > > + width = <1600>;
> > > + height = <1200>;
> > > + stride = <(1600 * 2)>;
> > > + format = "r5g6b5";
> > > + };
> >
> > I'm not an expert on DT, but I think the point of DT is to describe the
> > hardware. This doesn't describe the hardware at all.
>
> On my incompetent opinion, "bpp" parameter can replace size of
> framebuffer and "stride". Is not it?
Not necessarily: you could have a stride that is larger than a line.
Arnd
next prev parent reply other threads:[~2013-04-30 15:07 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-04 2:39 [PATCH V2] video: implement a simple framebuffer driver Stephen Warren
2013-04-09 0:16 ` Andrew Morton
2013-04-09 3:16 ` Stephen Warren
2013-04-09 8:08 ` Geert Uytterhoeven
2013-04-11 9:56 ` Laurent Pinchart
2013-04-11 16:06 ` Stephen Warren
2013-04-11 20:06 ` Laurent Pinchart
2013-04-11 20:38 ` Stephen Warren
2013-04-29 20:56 ` Laurent Pinchart
2013-04-29 21:15 ` Tomasz Figa
2013-04-29 21:20 ` Laurent Pinchart
2013-04-29 21:31 ` Tomasz Figa
2013-04-29 21:40 ` Laurent Pinchart
2013-04-29 22:04 ` Arnd Bergmann
2013-04-29 22:23 ` Laurent Pinchart
2013-04-29 22:40 ` Olof Johansson
2013-04-30 9:50 ` Laurent Pinchart
2013-05-02 18:25 ` Stephen Warren
2013-05-02 18:35 ` Geert Uytterhoeven
2013-05-03 10:06 ` Laurent Pinchart
2013-05-07 21:33 ` Andrew Morton
2013-05-08 2:36 ` Stephen Warren
2013-05-08 19:28 ` Olof Johansson
2013-05-08 20:58 ` Rob Landley
2013-04-30 7:28 ` Tomi Valkeinen
2013-04-11 10:42 ` Geert Uytterhoeven
2013-04-11 16:10 ` Stephen Warren
2013-04-30 7:27 ` Tomi Valkeinen
2013-04-30 10:28 ` Arnd Bergmann
2013-04-30 11:42 ` Laurent Pinchart
2013-04-30 11:48 ` Tomi Valkeinen
2013-04-30 11:49 ` Laurent Pinchart
2013-04-30 11:46 ` Tomi Valkeinen
2013-05-03 5:40 ` Dave Airlie
2013-04-30 7:39 ` Tomi Valkeinen
2013-04-30 10:34 ` Arnd Bergmann
2013-04-30 14:38 ` Re[2]: " Alexander Shiyan
2013-04-30 15:07 ` Arnd Bergmann [this message]
2013-05-18 10:29 ` Alexandre Courbot
2013-05-20 15:25 ` Stephen Warren
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