[Letux-kernel] [small team RFC v3 00/10] Make use of TILER for OMAP5/Pyra LCD

Andreas Kemnade andreas at kemnade.info
Tue Feb 6 07:03:44 CET 2018


On Mon,  5 Feb 2018 17:20:55 +0100
"H. Nikolaus Schaller" <hns at goldelico.com> wrote:

> This patch set seems to be required to form a practical solution for the OMAP5 based Pyra.
> What we need is to rotate the LCD on the MIPI port for X11/DRM/FB by 90 degrees
> because it is a portrait display installed in landscape rotation.
> This should either be done by xrandr/xorg.conf and/or some module parameter during
> boot.
> Independently, we also should be able to support xrandr on the HDMI port.
> We only need this on OMAP5 Pyra, not on OMAP3 devices like OpenPandora or GTA04.
> Since we have a multi-arch kernel the solution should not explicitly depend on
> the SoC we use or force to config for a specific SOC.
> At the moment this is partially a hack to make it working but some patches even
> miss signed-offs. So let's start to discuss them and improve until we can submit
> this work for review by a broader public (LKML).

> Andreas Kemnade (1):
>   omapdrm: try to allocate non-tiled buffer object if tiled fails
For reviewing (and bisect-ability) it would be easier to have this
squashed with omapdrm: allocate fbdev in TILER.

Another question:
Sebastian Reichel showed a rotated console on omap4 in his
fosdem presentation, so can we do it the same way?
As it rotated hdmi and lcd the same time it does not look like something
done in a lcd driver chip...

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