WIP: IPU and HDMI drivers for i.MX6

[Ulrich Grey]

Hello,

I am running

FreeBSD wqtest 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r285652M: Sat Jul 18
01:43:03 UTC 2015     gwgpi at wqtest-hf:/usr/obj/usr/src/sys/IMX6  arm armv6hf

on a Wandboard-Quad. I have built the image with HDMI-patch using
/usr/src/release/release.sh -c arm/Wandboard.conf
on the Wandboard itself (a armv6hf system).

To boot I had to copy ubldr from a armv6 image to the fat partition.
I don't know whether this is important in this context. Images without HDMI-patch are
booting successfully.

During boot I got a grapical u-boot logo, then the screen jitters and is black.
I have used an old EIZO Monitor and a Philips TV set. Both don't work.

Please see the attached file.

----------------------------------
On Sun, 19 Jul 2015 17:33:04 -0700
Oleksandr Tymoshenko <gonzo at bluezbox.com> wrote:

> Hello,
> 
> 
>     Last few months I've been working on IPU(video controller)/HDMI
> support for i.MX6. This patch[1] is the first very limited
> milestone. It contains more or less complete IPU driver, DVI mode
> support for HDMI framer, and EDID handler. Missing part is pixel
> clock management so at the moment driver relies on U-Boot to set
> pixel clock for 1024x768 at 60 mode and it's the only supported mode
> for now.
> 
> There seems to be several versions of DTS files for i.MX6 with
> very different structure for HDMI-related nodes. Patch works only
> with the version that is part of FreeBSD tree. 
> 
> Patch was tested on Hummingboard so any testing on other i.MX6
> devices is appreciated
> 
> [1] https://people.freebsd.org/~gonzo/arm/patches/imx6-ipu-hdmi-20150719.diff
> 
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