WIP: IPU and HDMI drivers for i.MX6

[Ulrich Grey]

A) Old EIZO-Monitor, attached with an HDMI-DVI Adaptor.
It works but failed to parse EDID.
See file #1.
Screenshot: http://ulrich-grey.de/dl/2015-07-21-095837_1024x768_EIZO.png

B) Philips TV (1440x900)
It works but failed to parse EDID.
See file #2
Screenshot: http://ulrich-grey.de/dl/2015-07-21-100240_1024x768_PHILIPS_TV.png
The Philips-TV screen shows the wrong aspect ratio, screenshot is ok.

Thank you for the patch.

Regards
Ulrich
------------------------------------------------
On Mon, 20 Jul 2015 13:54:50 -0700
Oleksandr Tymoshenko <gonzo at bluezbox.com> wrote:

> 
> > On Jul 20, 2015, at 5:07 AM, Ulrich Grey <usenet at ulrich-grey.de> wrote:
> > 
> > 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.
> 
> It seems to be the same problem Mikaël has: two IPUs active. Also it's not
> clear why reading EDID fails, so I added some more debug output
> 
> New patch:
> https://people.freebsd.org/~gonzo/arm/patches/imx6-ipu-hdmi-20150720.diff
> 
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