I recently started playing with the Core746I board from waveshare. It is quite different from the stm32f746g-disco. Seeveral IO are differently, the SDRAM is connected to bank 2, it has a different xtal. The stm32f746-ws looks like it could be for the waveshare board. At least the PLL setup makes sense for the 8MHz xtal. However there is no readme and I couldn't get details via commitlogs either - maybe there is, but I failed to find. I'm using the Open746I-C development board plus a 4.3" display. The stm32f746-ws had no SDRAM and LCD support, threrefor I started modifying the stm32f746g-disco directory instead. After a couple days of hunting problems, I finally got the SDRAM and display running. For my personal need that is all what is required, but I like to contribute it back to the tree. If the stm32f746-ws actually is the Waveshare Core746I, then I would add it to that tree, otherwise I would spin a new board directory.
-- B.Walter <be...@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
