RPi 2 with 7-inch touchscreen.

[Emmanuel Vadot]

 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 anwsers ?

 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>