Adding support of ARM board B-L475E-IOT01A using STM32L475 SoC

[Inès Varhol]

Hello,

Along with my fellow student Arnaud Minier, we're looking to implement support 
for a new ARM board for a university project.

As of now we've have implemented a minimal version for the machine and the SoC 
without any syscfg, timers or usart implementation. 
We have looked at the relevant informations about the procedure to submit a 
patch, however we aren't sure if we should submit a patch now already, 
as a way to get acquainted with the procedure and expectations, or if we should 
rather implement more peripherals and submit the patch all at once.

For further details about project, the end-goal is to emulate a maximum of 
peripherals and be able to display an emulated LED matrix driven by the 
QEMU-emulated board.

How we're proceding for now is replicating code designed for the stm32f405 SoC 
and other specific stm32f4xx code and adapting it for the stm32l475 SoC (both 
are Cortex-M4 SoC). 
Is it alright if the patch commits reflect this copy-paste then incrementaly 
change details procedure ?


Of course, we would greatly appreciate any guidance, suggestions, or insights 
you may offer regarding our current progress and the best course of action. 
Moreover, if there are other pertinent issues we should consider, we are eager 
to learn and adapt our approach accordingly.

Thank you for your time and consideration.

Best regards,

Inès Varhol