[PATCH 0/2] drm: add SimpleDRM driver

Luc Verhaegen libv at skynet.be
Thu Aug 4 14:15:25 UTC 2016


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 at 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.


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