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From: Luc Verhaegen <libv@skynet.be>
To: "Noralf Trønnes" <noralf@tronnes.org>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 0/2] drm: add SimpleDRM driver
Date: Thu, 4 Aug 2016 16:15:25 +0200	[thread overview]
Message-ID: <20160804141525.GC4256@skynet.be> (raw)
In-Reply-To: <1470319400-14625-1-git-send-email-noralf@tronnes.org>

On Thu, Aug 04, 2016 at 04:03:18PM +0200, Noralf Trønnes wrote:
> 
> I have tested simpledrm on a Raspberry Pi B+ with U-boot setting up the
> framebuffer and producing this node:
> 
>         framebuffer@1e887000 {
>                 compatible = "simple-framebuffer";
>                 reg = <0x1e887000 0x36c600>;
>                 format = "r5g6b5";
>                 width = <1824>;
>                 height = <984>;
>                 stride = <3648>;
>                 status = "okay";
>         };
> 
> I have only tested with fbcon and modetest (XR24,RG16).

Please do not make the same mistake as simplefb in making this purely a 
rpifb. Know that you will need some power and clock management for 
properly free devices that do not depend on a binary only RTOS which 
does _everything_ behind our backs.

Cfr this useless, endless and ridiculous discussion: 
http://lists.infradead.org/pipermail/linux-arm-kernel/2014-August/279071.html

Luc Verhaegen.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

WARNING: multiple messages have this Message-ID (diff)
From: Luc Verhaegen <libv@skynet.be>
To: "Noralf Trønnes" <noralf@tronnes.org>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] drm: add SimpleDRM driver
Date: Thu, 4 Aug 2016 16:15:25 +0200	[thread overview]
Message-ID: <20160804141525.GC4256@skynet.be> (raw)
In-Reply-To: <1470319400-14625-1-git-send-email-noralf@tronnes.org>

On Thu, Aug 04, 2016 at 04:03:18PM +0200, Noralf Trønnes wrote:
> 
> I have tested simpledrm on a Raspberry Pi B+ with U-boot setting up the
> framebuffer and producing this node:
> 
>         framebuffer@1e887000 {
>                 compatible = "simple-framebuffer";
>                 reg = <0x1e887000 0x36c600>;
>                 format = "r5g6b5";
>                 width = <1824>;
>                 height = <984>;
>                 stride = <3648>;
>                 status = "okay";
>         };
> 
> I have only tested with fbcon and modetest (XR24,RG16).

Please do not make the same mistake as simplefb in making this purely a 
rpifb. Know that you will need some power and clock management for 
properly free devices that do not depend on a binary only RTOS which 
does _everything_ behind our backs.

Cfr this useless, endless and ridiculous discussion: 
http://lists.infradead.org/pipermail/linux-arm-kernel/2014-August/279071.html

Luc Verhaegen.

  parent reply	other threads:[~2016-08-04 14:21 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-04 14:03 [PATCH 0/2] drm: add SimpleDRM driver Noralf Trønnes
2016-08-04 14:03 ` Noralf Trønnes
2016-08-04 14:03 ` [PATCH 1/2] " Noralf Trønnes
2016-08-04 14:03   ` Noralf Trønnes
2016-08-04 14:45   ` Daniel Vetter
2016-08-04 14:45     ` Daniel Vetter
2016-08-04 17:05   ` Noralf Trønnes
2016-08-04 17:12     ` Daniel Vetter
2016-08-04 14:03 ` [PATCH 2/2] drm: simpledrm: add fbdev fallback support Noralf Trønnes
2016-08-04 14:03   ` Noralf Trønnes
2016-08-04 14:15 ` Luc Verhaegen [this message]
2016-08-04 14:15   ` [PATCH 0/2] drm: add SimpleDRM driver Luc Verhaegen
2016-08-04 15:08   ` Daniel Vetter
2016-08-04 15:34     ` Luc Verhaegen
2016-08-04 15:44       ` David Herrmann
2016-08-04 15:44         ` David Herrmann
2016-08-04 15:59         ` Luc Verhaegen
2016-08-04 17:10           ` Daniel Vetter
2016-08-04 18:08     ` One Thousand Gnomes
2016-08-04 18:08       ` One Thousand Gnomes
2016-08-04 16:58   ` Noralf Trønnes
2016-08-04 16:58     ` Noralf Trønnes
2016-08-04 18:12     ` Luc Verhaegen
2016-08-05  7:18       ` Hans de Goede
2016-08-04 14:36 ` Daniel Vetter
2016-08-04 17:30   ` Noralf Trønnes
  -- strict thread matches above, loose matches on Subject: below --
2016-08-04 19:50 Ken Phillis Jr
2016-08-04 20:01 ` Daniel Vetter
2016-08-04 20:07   ` David Herrmann
2016-08-04 23:34     ` Ken Phillis Jr
2016-08-05  8:28     ` Jani Nikula

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