I have created couple of presentations for Early board bringup drivers in ARM SoC Board with respect to
zynq zc702 family ZED board.
Early board bringup drivers -> IRQ Chip controller + clock+timer+early printk + gpio + pinctrl + smp + uart
I have added set of drivers out of above series drvers
please check it.
It is mainly useful for identifying code flow of corrspending drivers, used heavily for debugging purpose in Board bringup of new boards.
Thanks & Regards
Thank you shabbirk