Moving CRG simplify reset with NaxRiscv debug module and is in fact more logical.
Also do some minor updates/cosmetic changes while touching CRG/SoCCore.
rst was not directly assigned/used on reset_less clock domains, so reset_less
property was not really useful. With the changes on stream.CDC, having a rst
(Even fixed at 0) is now mandatory on clock domains involved in the CDC, so this
also fixes targets.
CPU parameters are now selectively exposed to the user:
./digilent_arty.py --cpu-type=vexriscv_smp --help will show VexRiscv-SMP parameters.
./digilent_arty.py --cpu-type=naxriscv --help will show NaxRiscv parameters.
Mini Monitor 4K and Mini Recorder 4K are almost the same hardware with just changes on
the Video In/Out. For now tests have been done on the Mini Monitor 4K, but the aim is
support both boards in the same platform/target in the future, thus the mini_4k naming.
These boards could be used as affordable Artix7 dev boards for LiteX, to run Linux with
LiteX (512MB of RAM + a Video Framebuffer) or to create custom systems like a fast software
defined signal generator/recorder directly from a PC over PCIe, custom HDMI/SDI video
cards, etc... lots of possibilities :)
Florent Kermarrec