Basic rules for using git rtems and contribution to RTEMS

[Jiri Freyvald]

Hi,
I am using RTEMS on STM32F4DISCOVERY board. A lot of work on the BSP for 
this board was already done,
but there are still some missing parts (SPI, CAN driver, I2C driver 
improvement).
I've written SPI driver and in the future I'd like to write CAN driver 
and some other stuff like ADC,DAC.

My question is can I create some branch in git.rtems.org and use it even 
for not tested, (probably) not too stable code?
To allow someone who is willing to test it to share that source?

Regards,
Jiri Freyvald