RPi 2 with 7-inch touchscreen.

[Emmanuel Vadot]

 Oh, I thought that the touchscreen part was the problem.
 I know that gonzo@ have this screen and he have it working (don't know if it's RPI-B or RPI-2)
 If I understand correctly it works with HDMI but not with the Display Connector ? config.txt might needs some line to enable it.

On Mon, 28 Mar 2016 14:07:31 +0100
Mark R V Murray <markm at FreeBSD.org> wrote:

> 
> > On 28 Mar 2016, at 13:57, Emmanuel Vadot <manu at bidouilliste.com> wrote:
> > Hi,
> > 
> > I'm not sure that we support it, from what I understand the official screen seems to use i2c for the touchscreen part (via the FT5406 IC).
> > Could you run "i2c -s" on the different i2c busses to see if the chip answers ?
> 
> I see nothing on bus scans of /dev/iic[01], nut I know that I2C works as I can talk to other I2C devices (not connected at the moment).
> 
> What is more important is video; the "touch" aspect can wait.
> 
> M
> 
> > 
> > Thanks,
> > 
> > On Mon, 28 Mar 2016 13:44:36 +0100
> > Mark R V Murray <markm at FreeBSD.org> wrote:
> > 
> >> Hi Folks,
> >> 
> >> I have an RPi2 and I'm having some difficulties with the "official" 7-inch touch-screen: https://www.raspberrypi.org/blog/the-eagerly-awaited-raspberry-pi-display/
> >> 
> >> I know the touchscreen works, because it works with RaspBian. I can't get any activity out of it with FreeBSD, however.
> >> 
> >> I'm using FreeBSD-11-CURRENT, and the boot image is based on an 11-CURRENT "official" download, but I added a very recent build of sysutils/u-boot-rpi2.
> >> 
> >> I can build CURRENT on the machine (using a USB SSD, manually mounted), and I made sure I had the latest RPI2.DTB file in the FAT partition.
> >> 
> >> The screen stays stubbornly OFF.
> >> 
> >> Here is the relevant extract of CONFIG.TXT:
> >> 
> >> hdmi_force_unplug=1
> >> or
> >> hdmi_force_hotplug=1
> >> or
> >> #hdmi_safe=1
> >> or
> >> hdmi_ignore_edid=0xa5000080
> >> hdmi_drive=2
> >> hdmi_group=2
> >> hdmi_mode=28
> >> 
> >> ... and I've tried a couple of combinations of the above with no luck. I can make an HDMI TV work, but not the inbuilt ribbon-cable interface.
> >> 
> >> I suspect the DTB file as FreeBSD's is much smaller than RaspBian's, but I'm not all that clued in that department.
> >> 
> >> Has anyone had any better luck than me?
> >> 
> >> M
> >> --
> >> Mark R V Murray
> >> 
> > 
> > 
> > --
> > Emmanuel Vadot <manu at bidouilliste.com>
> > 
> 
> --
> Mark R V Murray
> 


-- 
Emmanuel Vadot <manu at bidouilliste.com>