6. Revision History

Date	Revision	Changes
Oct 25, 2021	v1.5	Add missing picture for CTRL I/O header Add pin description of CSI feature connector
Apr 11, 2018	v1.4	Add heatsink spacer instructions Clarify U-Boot deployment on SD card
Jan 22, 2018	v1.3	Improve image readability, add Linux GPIO# column
Oct 31, 2017	v1.2	Describe Linux USB bus number mapping
Oct 2, 2017	v1.1	Add I2C number mapping table Update SPL and BL31 file names
Jul 13, 2017	v1.0	Adapt debootstrap instructions for Debian 9 “Stretch” Add GPIO Pin Muxing section
Jul 10, 2017	v0.3	Complete software guide chapter Add video mux information
Jun 2, 2017	v0.2	Preliminary public release
May 30, 2017	v0.1	First internal release