Am Montag, den 30.05.2016, 18:39 +0200 schrieb Peter Senna Tschudin:

Configure the IPU assignment order to assign one IPU per external
display. A single IPU can drive multiple external displays but there are
resolution restrictions. After this patch the GPU is capalbe of driving two
Full-HD monitors.

It's also capable to do it before this patch, if you use the first and
third crtc. You are just reordering the crtcs.
Unfortunately the IPU has combined limitations across multiple crtcs in
one IPU, which currently can't be communicated to userspace.

regards
Philipp